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全部话题 - 话题: heat
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h********5
发帖数: 386
1
Residential Heating Oil FAQ's
Heating oil is a petroleum product used by many Americans to heat their
homes. Historically,heating oil prices have fluctuated from year to year and
month to month, generally being higher during the winter months when demand
is higher. This winter, distillate fuel inventories are low and customers
will be concerned about the potential for higher prices. To understand the
reasons for these price variations, consumers need to understand how heating
oil is used and how... 阅读全帖
T********g
发帖数: 121
2
MIAMI — Shane Battier will be with the Miami Heat this season. Mario
Chalmers is deciding if he’ll be there with him.
Saying he only wants “a winning role” at this point in his career, Battier
announced Thursday morning that he would sign with the Eastern Conference
champion Heat. Miami let him know as soon as the free-agency shopping window
formally opened this week that he was the Heat’s top signing priority —
even though the team has some question marks at the point guard and center
spots.
“O... 阅读全帖
e*******e
发帖数: 9616
3
来自主题: Basketball版 - Top five Miami Heat jokes
http://sports.yahoo.com/nba/news?slug=ycn-8567855
Top five Miami Heat jokes
By Mark Paul, Yahoo! Contributor Network
Wednesday, Jun 1, 2011
Ever since the day LeBron James(notes) and Chris Bosh(notes) jumped ship to
Miami in the offseason, the Heat became a team that many people love to hate
. They rank up there with the Lakers and Yankees as teams that people either
really love or really hate. Not surprisingly, most people outside of Miami
can't stand the Heat. They are overexposed, appearing o... 阅读全帖

发帖数: 1
4
来自主题: Living版 - 请教一个Heat pump暖气的问题
也请教一下热泵冬天制热的问题。我家空调在auto状态下,如果室外温度低接近0度,
控制屏就会显示出现aux heat on, 理论上应该自动启动这个辅助电加热。但问题是这
个辅助电加热不会启动,只有在按下紧急启动装置EM才会会加热。否则空调就不制热。
这应该是需要维修了吗?
若不能自动启动,若温度低还没人在家不都结冰甚至爆水管了?这不合理的啊。多谢哈!


: 如果楼主的这个温控器装在西部和南部较温暖地区,应该是感觉不大出来的,至
少不会

: 那么明显。如果装在严寒地区,15年前的heat pumps, 有些机种已有内置的
ambient

: control 去锁住compressor, 或者通过加装附加装置去实现heat pump 和
auxiliary

: heat 的彻底切换。自从智能温控器的出现,现在的heat pump 设计得没以前那
么复杂

: ,楼主需要用到如 White Rodgers Blue 系列, 或者Honeywell Vision Pro,
或IAQ

: 系列的温控器才有这个功能(heat pump compres... 阅读全帖
W*******n
发帖数: 4140
5
来自主题: Basketball版 - The Heat Needs to Make History
The Heat Needs to Make History
by Limin Wang
06/07/2012
Here comes the game 6 between Miami Heat and Boston Celtics at the Garden,
with Celtics leading at 3:2.
First of all, the Heat need to think it the right way. To win consecutively
2 games is not a strange thing to the Heat. They won 2 in the beginning, and
Boston won 3 in the following, so why the Heat can not win 2 consecutive
games? To come back is not a strange thing to the Heat. They came back from
1:2 from the Heat-Pacers series just a... 阅读全帖
b****a
发帖数: 793
6
来自主题: Military版 - 基础知识heat pump vs gas furnace
Pros of heat pumps:
Work efficiently year-round. One investment can help you reduce your heating
and cooling bills.
More environmentally friendly. Heat pumps can create one-and-a-half to three
times more heat energy than they consume.
Cons of heat pumps
Typically more expensive than furnaces. Although, you are also getting an
efficient air conditioner.
May require a backup heat source. For extremely cold nights in Northern
California, backup or supplementary heat (such as a furnace) may be requi... 阅读全帖
w****5
发帖数: 64
7
先扫扫忙,啥是Heat Pump。(这里说的Heat Pump就是家用空调机组;可不是家里的窗
式空调。)其工作原理和冰箱差不多:冰箱工作的时候,冰箱内制冷,而热量都转移到
了冰箱后面的散热片上。用手轻轻靠近冰箱后面,会发现黑色的散热片很热,甚至烫手。
Heat Pump逆向操作,将室外制冷,把热量带到室内。这和一般的电加热或使天然气加
热相比,效率更高更省电。Heat Pump省电的效率曲线不是一条直线,只有当室外的温
度在50度(华氏)左右的时候作用比较突出。例如,如果室外温度一直是40~50度,用
Heat Pump工作比直接用暖气划算。因为Heat Pump是将室外的热量搬运到了室内,而不
是像暖气那样加热产生热量。所以Heat Pump更省电,大约是电阻丝加热耗电量的四分
之一!
但是当室外温度在37度以下的时候,Heat Pump的工作效率就非常低了。一般家里的
HAVC系统就会停止Heat Pump工作,启动Heating 装置了。(You still need the Old
fashion way.)
所以,是否需要Heat Pump,完全是看住的地方了,如果你住的地
i***e
发帖数: 9429
8
来自主题: Living版 - 请教一个Heat pump暖气的问题

如果楼主的这个温控器装在西部和南部较温暖地区,应该是感觉不大出来的,至少不会
那么明显。如果装在严寒地区,15年前的heat pumps, 有些机种已有内置的ambient
control 去锁住compressor, 或者通过加装附加装置去实现heat pump 和 auxiliary
heat 的彻底切换。自从智能温控器的出现,现在的heat pump 设计得没以前那么复杂
,楼主需要用到如 White Rodgers Blue 系列, 或者Honeywell Vision Pro, 或IAQ
系列的温控器才有这个功能(heat pump compressor lockout), 并且还需接根室外温度
感应器到温控器里。要明白的是一台普通的heat pump(最近8年的机子),当室外温度
在40F( 其实还可低几度)或以上时所产生的热量可足够满足整个室内空间,如果满足不
了,而需要用到auxiliary Heat 的话,那就意味着你的Heat pump 有问题。反之如果
没有运行heat pump的话,单heat strips/auxiliary heat 产生的热量也是足够满足... 阅读全帖
q**x
发帖数: 1636
9
【 以下文字转载自 JobHunting 讨论区 】
发信人: quix (uglyDuck), 信区: JobHunting
标 题: Opportunity/Referral - Heat Transfer Engineer
发信站: BBS 未名空间站 (Mon Aug 26 15:39:06 2013, 美东)
I am a consultant in Houston, TX; Oil and Gas companies retain our firm to
find qualified candidates for their open positions. I wanted to see if you
or anyone you know may be interested in a Heat Transfer Engineer role with
one of my clients?
My client is a leading international supplier and licensor of process
technology, catalysts, ... 阅读全帖
q**x
发帖数: 1636
10
【 以下文字转载自 JobHunting 讨论区 】
发信人: quix (uglyDuck), 信区: JobHunting
标 题: Opportunity/Referral - Heat Transfer Engineer
发信站: BBS 未名空间站 (Mon Aug 26 15:39:06 2013, 美东)
I am a consultant in Houston, TX; Oil and Gas companies retain our firm to
find qualified candidates for their open positions. I wanted to see if you
or anyone you know may be interested in a Heat Transfer Engineer role with
one of my clients?
My client is a leading international supplier and licensor of process
technology, catalysts, ... 阅读全帖
k*********g
发帖数: 791
11
来自主题: Computation版 - 好消息,宇宙不会发生heat death!
\section{Classical Thermodynamics: heat death}
Next let us carefully and rigorously recheck how the conclusion of
heat death of the universe is drawn. Basically, an \emph{isolated}
system with \emph{finite} volume is studied and it is discovered
that the entropy of the system always increases. Then it is
claimed that at some time point in the future, very very far
future, the universe will end up with a heat death.
There is a fundamental mathematical error in the above line of
logical inference.... 阅读全帖
q**x
发帖数: 1636
12
来自主题: JobHunting版 - Opportunity/Referral - Heat Transfer Engineer
I am a consultant in Houston, TX; Oil and Gas companies retain our firm to
find qualified candidates for their open positions. I wanted to see if you
or anyone you know may be interested in a Heat Transfer Engineer role with
one of my clients?
My client is a leading international supplier and licensor of process
technology, catalysts, adsorbents, process plants, and consulting services
to the petroleum refining, petrochemical and gas processing industries.
Attached you will find the role specifi... 阅读全帖
x**m
发帖数: 941
13
来自主题: Living版 - 请教一个Heat pump暖气的问题
去年遇人不淑,一位中国空调师傅换好空调当天拿了钱就消失了,从此不再接电话。这
次实在没办法了,换个电话号码能和他说上话,不过总是说忙,要改时间打回来给我,
当然他从来没有打回来过。
这位空调师傅在夏天换的是一个Coleman 2.5ton的空调加heat pump,另接了个
Honeywell的普通温控,夏天冷气都没有问题。去年开暖气以后,问题来了。
先是电费奇高,一千尺不到的townhouse end unit居然要300多块一个月。检查了房子
保暖,似乎没问题,屋顶化雪比邻居还慢。请来一位空调技师,说是和空调同时换的温
控有问题导致condenser没有启动,一直用的低效的电暖auxiliary heat。换了个White
Rodgers的温控(1F85-277)并设置成HP2模式以后,condenser能够启动,手摸
condenser外面两根铜管也是热的。
现在的问题是:在这两天室外华氏几度的情况下,
* 如果室温65,设置温度67,condenser开始运行,heat pump吹较冷的空气进屋,
auxiliary heat长时间不启动。温控显示stg1。温控的说明书介绍如果... 阅读全帖
t******y
发帖数: 6206
14
NASDAQ Hearings Panel Denies SmartHeat Appeal of NASDAQ
SmartHeat Inc., (NASDAQ: HEAT; website: www.smartheatinc.com) received
notification from the NASDAQ Listing Qualifications Hearings Panel that it
affirmed the determination made by the staff of the NASDAQ's Listing
Qualifications Department to delist the company's shares of common stock
from the NASDAQ Stock Market ("NASDAQ"). As a result, the company's shares
of common stock, which were subject to a trading halt since May 30, 2012,
have be... 阅读全帖
w*******y
发帖数: 60932
15
I have been price watching these for a while, and I bought the 10 cup
version about two weeks ago. LOVE IT. You can make small batches, I can
confirm.
5-1/2-cup rice cooker and warmer with micro computer technology
Superior induction heating evenly distributes heat for excellent results
Multi-menu cooking functions; LCD control panel; keep warm; timer
Spatula, spatula holder, and rice-measuring cup included
Measures 14-3/16 by 9-13/16 by 7-15/16 inches
Along with micro com... 阅读全帖
i***e
发帖数: 9429
16
:是不是heat pump就是空调的反作用,
可以这么说
:也是用冷凝液体的传输?
循环
:而这个electric furnace其实就是电热丝,
是的
:但是效率肯定没有heat pump高,
这个不能这样理解。heat pump 的效率是根据室外温度的变化而改变的,室外温度越低
,效率越差。所以为啥大部分的heat pump 当室外温度低于40F时得切换到电热丝或者
furnace.
:所以纯电的话就必须要heat pump,
这个不一定,看你喜欢。你也可以装A/C only + Fan coil with heat strip.
:而如果有gas的话用furnace效率就会很高?
这个也不一定, 与前面说到的类似,heat pump 当室外温度高于40F时,运行成本会低
于用furnace, 各空调厂家大力提倡 Hybrid Heat / DualFuel 系统就是这个道理。
http://www.bryant.com/learnmore/hybridheat.shtml

heat
b*****t
发帖数: 3396
17
来自主题: Basketball版 - Epic Fail ! 2011 NBA Champion - Miami Heat!
http://tiny.cc/y5ykw
http://twitpic.com/5b13bv
http://sports.yahoo.com/nba/news;_ylt=Ags9wPsqr56Iafqs0vc1NJ68v
slug=ap-heat-admistake
MIAMI (AP)—The Dallas Mavericks’ win over the Heat is a huge upset for
fans in Miami. Making matters worse, an ad in the local paper has
mistakenly congratulated the Heat on winning.
A full-page ad that ran in Monday’s Miami Herald reads “Congratulations
Miami” next to photos of Heat championship T-shirts and hats from
Macy’s. One T-shirt reads “Heat 2011 NBA Fina... 阅读全帖
c*******e
发帖数: 5818
18
第一场,马刺基本打出自己的技战术,heat估计是体力问题,轮换速度下半场很差,自
己压破式防守基本没打出来。马刺的那么多的turn over,多是非压迫的,heat也没从
这得太多便宜,因为他们的全场进攻没有几个,这也是马刺二十多失误,还赢了,他们
playoff 是平均不到13个。
heat一旦半场,只比okc好些,基本靠king和wade的单打,heat好,一个是king的视野
,pass不错,wade也能pass,偶尔bosh还可背打。为了放空间给wade和king,半场进攻
时,heat center基本是空的,主要是不同人不停的cut in。马刺在这方面的防守和人
人间的协防基本是联盟最好的。
还要赞下pop和巴西人,马刺最困难是三节后半段和四节头4分钟,pop为了保持体力,
硬是挺住没换上全部GDP,巴西人在这个stretch表现太出色,就靠他heat没把比分拉开
,要不分差很可能在10分以上。
二场,heat的防守一定会好,因为内线叫阿呆和巴西人基本打爆,斯波估计会多用哈斯
乐母,没打哈斯乐母,斯波估计怕马刺三分,但一场只在四节green 才开胡,但内线防
不住,还不如放... 阅读全帖
h****a
发帖数: 628
19
现在看的一个老房子, hotweater baseboard heating (暖气片)的, oil heating的.
想改成Gas heating, fin 的那种, 请问,
1) fin都是steamer heating 吗? steamer and hot water baseboard heating 有什么
区别? 2) 从oil heating 暖气片 改到gas heating of fin 需要注意什么?
3) steamer and hotwater 的boiler 不同吗
b******s
发帖数: 325
20
来自主题: Living版 - 改HEATING ZONE 的个数
一个single family detached, colonial, about 2500 sqft + 500 basement,两层加
个partially finished 的walk out basement,只有一个heating and cooling zone。
如果要该成2个的话,很花钱吗?要花大概多少钱呢?
========
Heating & Cooling
# of Heating Zones: 1
Forced Air Heating
Oil Heating
# of Cooling Zones: 1
Central Air Cooling
Full Insulation
Insulated Windows
========
如果一个heating and cooling zone的话,一个月冬天的开销要多少? We have very
cold winter.
还有,oil heating可以换成gas heating吗?贵吗?
thanks.
y*****g
发帖数: 521
21
The heat pump system/s produced heat and warmed the house with the
thermostat in the Emergency heat (EM
or Emer heat) position. This is for your information. If any heat pump's
thermostat has to be operated in the
emergency heat (EM or Emer heat) position for warmth then the system is not
working as intended, operating costs
will increase significantly and a licensed mechanical contractor should be
contacted for repairs as soon as practical
我不知道我是不懂英文还是不懂逻辑。。请问这是说heat pump有问题吗?还是没问题
W*******n
发帖数: 4140
22
来自主题: Basketball版 - Heat or Beat?
Heat or Beat?
by Limin Wang
06/14/2014
Spurs were so mean that they broke down their air conditioners to test
whether Heat was true by the name. Game 1 fell into their cowboy hats
at the final minutes. When the AC was on during Game 2, Heat won a
typical cool game. Games #3 and 4 were just phenomenal for Spurs while
Heat were sleeping sound and dreaming around. As an NBA fan, I wish
the finals last longer, best to Game 7.
In the offense end, Heat needs to play their own games to win. First
of al... 阅读全帖
w*******y
发帖数: 60932
23
Link:
http://www.walmart.com/ip/Relaxzen-Reversible-Shiatsu-Massage-Cushion-with-Heat/10972657
The Relaxzen heated shiatsu cushion provides therapeutic massage and heat
treatment. It features a professional thumb-pressure style shiatsu massage
to knead away at aching muscles while promoting relaxation at home or the
office.
Relaxzen Reversible Shiatsu Massage Cushion with Heat:
Reversible with soothing heat treatment
Kneading action provides deep, penetrating massage for tired muscles
3 temperat... 阅读全帖
w*******y
发帖数: 60932
24
ALL DEAD
Found these when the front page deal ran out at 23 cents per warmer....
These (Regular sizes) are larger packs with only slighty higher per warmer
prices (Less than 2 or 3 pennis each. The kids ones are actually 5 cents
cheaper, per warmer, BUT still last 8+ hours.
Heat Factory Kids Hand Warmer - 8+ Hours Heat Each (40 Pair Warmers) $14.86
= $0.186 per warmer
KIDS Size:
http://www.amazon.com/Heat-Factory-Kids-Hand-Warmer/dp/B00478RK

Heat Packs 7+ Hour Hand Warmer (40 Pair Warmers) - ... 阅读全帖
W**********n
发帖数: 187
25
The Cook County medical examiner’s office has determined a 19th person died
of heat-related causes following last week’s heat wave.
Dorothy Hawkins, 69, of the South Chicago neighborhood, died of heart
disease, with heat stress as a secondary cause, in an accident, the medical
examiner’s office found this afternoon.
Officers were called to the 7400 block of South Yates Boulevard at 5:24 p.m.
Monday after a family member called police to say the woman who lived there
had not spoken with family si... 阅读全帖
j****9
发帖数: 95
26
来自主题: Automobile版 - HEATED VS NON HEATED 后视镜
谢谢
heated 换一个non heated也能用?估计反之亦然

估计低配车是non heated吧,heated镜子上可能有个标志
我有个车本来是heated,后来换了个non heated凑合着用
h******s
发帖数: 309
27
买的forclosure condo, 银行啥information都没有给,到现在还不知道暖气到底用的
是heating element还是heat pump,空调在楼顶上,要爬上去检查是不是heat pump很
麻烦。有什么简便易行的方法可以判断heating用的是heating element还是heat pump?
C*******d
发帖数: 15836
28
Emer heat uses electric heating wires which should be the most expensive way
for heating. Such a heating method should come on automatically when Aux
heat couldn't provide enough heat during cold weather. So usually you don't
need to turn it on yourself. But if it is not, you may have to do it
manually.
t**d
发帖数: 6474
29
你那是heat pump系统在工作。如果想快点热起来,就用Auxiliary Heat-Emergency
Heat。heat pump使用电,Auxiliary Heat-Emergency Heat使用气。
r**********n
发帖数: 146
30
请教一下,我又翻了我家的inspection report。报告里说我家heating用的是gas和
heat pump, gas heating at basement unit, heat pump heating at attic unit。这
是不是说楼上开暖气的时候用是heat pump, 楼下开暖气时用的是gas? 还是说只有heat
pump不work well的时候,才会启动gas?
d*****r
发帖数: 39446
31
【此篇文章是由自动发信系统所张贴】
⊙ 博彩开启于:Sun Apr 29 03:09:02 2012 类别:单选
⊙ 主题:NBA纽约第二场,Heat让分10分
⊙ 博彩题目描述:
迈阿密Heat让分10分:
迈阿密Heat得分减去纽约Knicks得分大于10分,迈阿密Heat胜,纽约Knicks输
迈阿密Heat得分减去纽约Knicks得分小于10分,迈阿密Heat输,纽约Knicks胜
4/30,周一,东部时间下午6:30PM封盘。
【选项如下】
(1) 纽约Knicks
(2) 迈阿密Heat
d*****r
发帖数: 39446
32
【此篇文章是由自动发信系统所张贴】
⊙ 博彩开启于:Mon Apr 30 22:13:15 2012 类别:多选
⊙ 主题:NBA纽约第二场,Heat让分10分
⊙ 博彩题目描述:
迈阿密Heat让分10分:
迈阿密Heat得分减去纽约Knicks得分大于10分,迈阿密Heat胜,纽约Knicks输
迈阿密Heat得分减去纽约Knicks得分小于10分,迈阿密Heat输,纽约Knicks胜
4/30,周一,东部时间下午6:30PM封盘。
【打对勾者正确选项】
√(1) 纽约Knicks
(2) 迈阿密Heat
h**********g
发帖数: 3962
33
来自主题: Basketball版 - Miami Heat is the best team in the NBA
in terms of fighting. LOL
http://espn.go.com/nba/playoffs/2012/story/_/id/7962129/
miami-heat-indiana-pacers-register-3-flagrant-fouls-game-5
There were three flagrant fouls in the Heat's 115-83 Game 5 victory that
gave them a 3-2 series lead plus several players claiming cheap shots. The
league office will be busy Wednesday reviewing the actions that could result
in suspensions before Thursday's Game 6 in Indiana.
In a span of 57 seconds in the second quarter there were two flagrant fouls
after... 阅读全帖
c*******e
发帖数: 5818
34
来自主题: Basketball版 - 这个final,应该是heat 4:1 or 4:2
但他们自己托到game 7,game 6 几乎丢掉冠军。
NBA playoff, 两个队7场4胜,关键是match up,就5个starter,heat match up well
4 个,除了阿呆这一点,即使parker没伤腿,wade和他也是互爆,卡哇伊还是嫩些,
不足以和LBR完全对抗,不过真的前途无量,很有duncan的风范,spurs 打的最好的就
是第5场,当马努回到他妖刀的状态。就替补,heat完胜spurs,LBR确实吸引了好多报
大腿的。
现在NBA,能够和heat match up well就是pacer,几乎是55开,内线大个和west一起,
heat只能偷袭,像鸟人这样的。paul下个赛季应该更好,如果pacer在暑期能用格兰杰
换一两个大心脏的替补,heat会真的很麻烦。
不过话说回来,NBA还是个show,为大家娱乐的,pacer和heat都在东部,为了final,
heat还会过。昨天的第七场,要不裁判,spurs估计早缴械了,就没有阿呆最后那个遗
憾了,看到他垂地,还是很令人动容的,37岁了。
g*****9
发帖数: 4125
35
来自主题: Living版 - 有用heat pump的么?
How big is your house and how old?
How old is your heat pump and what is the BTU and SEER rating?
Is it a compression heat pump and absorption heat pump?
Also you did not specify what is your heat source, I assume you have a air
source heat pump, the COP will drop when outside temp gets cold, you can
switch to a ground source closed loop heat pump, I would suggest a vertical
loop version (ground water) instead of horizontal version (soil), since the
temp below 8 feet of gound is pretty constant,
n****u
发帖数: 120
36
Living in Northern Jersey - My baseboard heating system/boiler is about 50
yrs old and water heater is 15 yrs old, both are at retirement age. I
contacted PSE&G and they gave me quote for heating system around $7300, plus
additional $2700 for replacing water heater and install indirect heating
system saying the indirect system saves utility bill by using the heat in
winter to heat the water. Anyone has similar experience or have changed
heating or heater through PSE&G. i am 1st home buyer, no ex... 阅读全帖
F********y
发帖数: 7139
37
来自主题: Living版 - heat pump furnace有啥优缺点
温度那么低的时候优点确实体现不出来。最主要的优点就是外面不是特别冷的时候(四
十度以上吧),屋内取暖非常的节省能源,可以说是最efficient的一种。不过一旦室
外温度降到30度以下了,基本上就是backup或者auxiliary heating在工作了,和传统
的加热没什么区别。
缺点是温度尽量保持恒定,如果要调节睡眠温度,或者上班温度,最好不要超过2度。
heat pump由于工作原理的问题,加热缓慢,所以非常适合用来维持恒温。但是如果晚
上室内冷到60度,早上想加热到70度的话,heat pump自己是热不来那么快的,那时候
基本上全是backup heating全功率运行,基本上晚上节省的这点早上一下全填回去了还
不一定够,所以还不如保持恒温。
最佳的解决方案当然是heat pump和geothermal一起用,可以保证永远都是和50度左右
的环境交换热量,当然,$$$也是需要的了
另外,如果backup heating是天然气的话,花销也还可以,毕竟天然气便宜,而且在不
是特别冷的时候取暖真的也是非常efficient的。总之,我是推荐的
t****e
发帖数: 4821
38
来自主题: Living版 - heat pump furnace有啥优缺点
在零下十度左右,Heat Pump 的效率已经非常非常低了,基本不太能提供在那个温度下
房子所需的全部供热量,或许大部分的供热需要由 auxiliary/backup heat 来提供
,如果 auxiliary/backup heat 是用电的,冬天几个月需要有点思想准备,别被电费
帐单吓着,那个 auxiliary/backup heat 的电热丝通常都在 1-1.5 万瓦。
如果冬天基本是零下十度左右甚至更低,Heat Pump 在你那个地区应该不是好的选择,
当然,如果你家只能用电,你也没别的选择。 我家跟你家一样,Heat Pump,只有电一
种选择,冬天四个月的电费大概占全年电费的 60%
F********y
发帖数: 7139
39
来自主题: Living版 - heat pump furnace有啥优缺点
温度那么低的时候优点确实体现不出来。最主要的优点就是外面不是特别冷的时候(四
十度以上吧),屋内取暖非常的节省能源,可以说是最efficient的一种。不过一旦室
外温度降到30度以下了,基本上就是backup或者auxiliary heating在工作了,和传统
的加热没什么区别。
缺点是温度尽量保持恒定,如果要调节睡眠温度,或者上班温度,最好不要超过2度。
heat pump由于工作原理的问题,加热缓慢,所以非常适合用来维持恒温。但是如果晚
上室内冷到60度,早上想加热到70度的话,heat pump自己是热不来那么快的,那时候
基本上全是backup heating全功率运行,基本上晚上节省的这点早上一下全填回去了还
不一定够,所以还不如保持恒温。
最佳的解决方案当然是heat pump和geothermal一起用,可以保证永远都是和50度左右
的环境交换热量,当然,$$$也是需要的了
另外,如果backup heating是天然气的话,花销也还可以,毕竟天然气便宜,而且在不
是特别冷的时候取暖真的也是非常efficient的。总之,我是推荐的
t****e
发帖数: 4821
40
来自主题: Living版 - heat pump furnace有啥优缺点
在零下十度左右,Heat Pump 的效率已经非常非常低了,基本不太能提供在那个温度下
房子所需的全部供热量,或许大部分的供热需要由 auxiliary/backup heat 来提供
,如果 auxiliary/backup heat 是用电的,冬天几个月需要有点思想准备,别被电费
帐单吓着,那个 auxiliary/backup heat 的电热丝通常都在 1-1.5 万瓦。
如果冬天基本是零下十度左右甚至更低,Heat Pump 在你那个地区应该不是好的选择,
当然,如果你家只能用电,你也没别的选择。 我家跟你家一样,Heat Pump,只有电一
种选择,冬天四个月的电费大概占全年电费的 60%
h*e
发帖数: 10233
41
【 以下文字转载自 Family 讨论区 】
发信人: hte (小步舞曲), 信区: Family
标 题: 求教HVAC大牛如何知道自己的hvac是不是heat pump system
发信站: BBS 未名空间站 (Sun Feb 21 10:09:15 2016, 美东)
昨天开窗透风后重新开暖气,结果不小心按错键进入config模式,不知道怎么出来就在
里面瞎按了一通。其中有个heat pump选项,我想当然地选了yes,结果暖气好象启动了
,但是早上起来一看,屋里温度才50几度,暧气口不出热风。到hvac那里一看,地上有
个小pump盒子下面一滩水。于是刚才把heat pump改成no, 现在似乎正常了,暧气口出
热风,pump盒子也正常工作。我感觉这是正确选项。不过还是想和大牛们确定一下如何
知道自己的hvac是不是heat pump system。另外如果不是pump heat system,却选成
pump heat运行了一个晚上,对hvac有没有危害吗?多谢多谢
P******g
发帖数: 18
42
2002年的Heat pump系统(品牌Carrier)只加热,不吹风了,是air handler的
variable speed motor坏了。
有home warranty,保险公司说给换air handler。得额外交$550。由于保险公司找的
contractor网上rating非常差,有点信不过,所以自己又花100块找了个rating相当好
的公司A,想要个second opinion。公司A建议air handler和室外机一块儿换。报价$
8300。
邻居说他两年前刚换了heat pump(室内外一起换的),找的local小公司B,换的
Bryant品牌,花了$4000多点儿。我又找公司B报了价,也要$8000。
下面是机器型号对比:

公司A: (10年warranty)
室内机:FV4CNB005L (Variable speed air handler)
室外机:226ANA048 (Bryant preferred series, single stage output, 4 ton, heat
pump)
公司B: (10年warrant... 阅读全帖
L*****3
发帖数: 922
43
来自主题: Stock版 - 关于HEAT
这个分析更合理。睿能是俩核电项目的热交换板的供应商。
lz发的那个消息去年8月份就有了。
睿能的CEO是清华的硕士,高管里还有几个海龟,相比ldk,我相信heat的管理层更靠谱
。Heat上市前的董事长是前沈阳市的搞开发的主任,管理层里现任的CFO和审计都有政
府背景,所以在东北,公司有了这层关系也比较靠谱。
Heat的上市辅导是美国的一个equity firm做的,走的和不少小中概一样的路线,就是
先上场外交易市场,再上纳市,整个融资过程也可谓不短,所以该有的经验人一样不少
,现在没发布消息,就是没消息,或者在等配合庄启动。
Heat的国内市场不小,公司运营看起来也很正常,没有负面消息,报表看上去很华丽,
虽然资产负债有些项目有问题,但完全都可以解释。
一大批中资08年进的美国市场,我相信他们如果要坐庄,目标就是heat这种中概,盘小
而且好控制,还没有国内的监管。
所以这次Heat这样搞,到底是不是因为有shake up的消息不知道,但我更相信是因为庄
比较狠。
b*****n
发帖数: 2478
44
来自主题: Stock版 - HEAT要涨了吗?
这个领域的货款方式是分成三个阶段,有些款被拖欠可以理解,你应该多看看相关的东
西再做评论。
其次,我投资是为了赚钱,炒不炒底是我自己的操作自由。另外我从来没有误导过人买
heat,相反在大家都觉得heat要去4的时候,我还出来说了两句不要玩heat的短线,相
信这里关注过heat的人心里都有数。你上次就在我劝大家不要玩heat短线的时候跳出来
,莫名其妙说我是庄托。今天反过来又说我误导别人,还说自己不是特别恨heat,我都
想不出来别的解释了
c***n
发帖数: 921
45
现有的是烧oil的heating
如果要换heating system的话,是
heat pump
好还是
Steam and Hot Water Heating
好呢?
大家说说?
下面这个帖子是关于heat pump的
http://www.mitbbs.com/article_t/Seattle/32443297.html
h********5
发帖数: 386
46
今年7/1起麻省取暖油含硫量从2,000 parts-per-million (ppm) on average 降到
no more than 500 ppm。 2018年起降到 15 ppm 。
-------------------------------------------------
A Cleaner Home Heating Oil is Coming
Beginning this summer, home heating oil across Massachusetts will become
cleaner and more efficient. On an environmental basis, heating oil will also
become increasingly competitive with other fuels, including natural gas.
On July 1, 2014, Massachusetts and Connecticut will begin requiring that all
heating oil so... 阅读全帖
j****9
发帖数: 95
47
来自主题: Automobile版 - HEATED VS NON HEATED 后视镜
有人知道怎么区别HEATED VS NON HEATED 后视镜吗?我的旧TOYOTA型号是2001 CAMRY
LE的,不小心把DRIVER SIDE后视镜碰掉了,DEALER那里修要230+,想去AMAZON买一个
自己装,可搞不懂要买HEATED 还是NON HEATED。
谢谢。
P***5
发帖数: 1089
48
来自主题: Automobile版 - HEATED VS NON HEATED 后视镜
估计低配车是non heated吧,heated镜子上可能有个标志
我有个车本来是heated,后来换了个non heated凑合着用
r******l
发帖数: 243
49
来自主题: Family版 - 请教:空调 VS Heat Pump
最近发现家里的AC不灵了,找师傅来看,说是AC20年了,到岁数了,不值得修了。他说
Heating也是20年了,但是估计还能撑几年。
师傅给了几个options,不过我不太有经验,想请教一下有经验的xdjm。
1.如果replace成和现在一样的3.5吨的,里外3000刀,AC only.
2.他建议至少要换4吨的,因为房子有不到3000尺。4吨的AC only 3500刀,如果一起换
heating,再加4000刀。但可能有1000到的fedral rebate。
3. 如果要5吨的,那就要改造pipe&wire,他不推荐。
4. 我问过他geo heat pump,他说我这房子有可能带不起来,不推荐。
我想请教一下大家这几个问题:
1. 我这heating是不是该一起换?
2. 我不知道他说的这个rebate是不是和tax credits一个东西,我看晚上咋说2013就结
束了。倒是heat pump似乎到2016结束。
3. 有没有3000尺房子的安heatpump的?是不是真是不给力。
谢谢!
R*********t
发帖数: 217
50
oil heating means oil is the fuel, the other choice is natrual gas
As far as the way heat is generated and circulated, you can have hot water
based or forced air based.
hot water based means water is heated in furnace and circulating in either
a so called radiator (nuan3 qi4 pian4) or a baseboard in every room, hot
water through the metal pipes radiates heat.
Forced air system circulates the air(either heated or cooled) through
instead of hot water, so A/C can be integrated more easily.
So to be
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