当前位置: 首页 行业新闻 热泵温暖和库尔斯

行业新闻

原文:
The efficiency of a heat pump -- that is, the amount of temperature change it produces per unit of electricity consumed -- varies with the outdoor temperature and the desired indoor temperature. The Government requires heat pumps to be labeled using Balance Valves a standard called the seasonal energy efficiency ratio, a measurement that combines the efficiency ratings under all conditions. (A related measure, the energy efficiency ratio, is used for conventional air-conditioners.) Check with your electric company before buying from a private contractor; many utilities pay rebates if the heat pump meets a minimum standard of efficiency. Efficiency Is Improved New heat pump designs are far more efficient than old ones. One reason is that most are designed to run at variable speed to keep the indoor temperature at the desired level, while conventional air-conditioners or furnaces run for a while to get the house to the proper temperature, and then shut off until the temperature drifts out of the desired range. Continuous operation means greater efficiency and eliminates a characteristic that many homeowners have found objectionable, a blast of cold air from the ducts on start-up. At Carolina Power and elsewhere, heat pump experts stress that to work right, a heat pump system has to be well thought out. Houses with forced-air heating that use natural gas are not always good candidates for conversion because the existing hot air system blows air heated to 120 degrees or so. A heat pump may produce only 90 or 100 degrees, so it will Instrumentation Ball Valves have to move more air through the ducts at higher speed, which can cause howling. Newer heat pumps are designed to produce higher-temperature air, which can also be critical. In winter, air at less than body temperature can create a draft that feels cold, even if it is warm enough to raise the room temperature to the desired level. Another critical problem is size. If the heat pump is too big, it will not have to work very hard to cool the house, but this has a drawback. Humidity is removed from the air when it passes over a cold coil, but if the system is too big it will lower the temperature before all the air has had a chance to go through the coil, leaving the house cool but clammy. Photo: Photo: Jason Mills, left, and Gerald Scott install a heat pump. In background is Jack Stevenson of Potomac Electric Power Company. (George Tames for The New York Times) Diagram: "A Pump That Heats and Cools," shows how in winter the heat pump extracts heat from cool outdoor air and delivers it to the house, using a compressor like the one in an air-conditioner or refrigerator. In summer the compressor pushes coolant in the Instrument Manifolds opposite direction, so the system extracts heat from indoors and sends it outside. (The New York Times;Illustration by John Papasian)
原文来自: http://www.nytimes.com/1991/07/27/news/a-reversible-air-conditioner-heat-pump-warms-and-cools.html?pagewanted=2

A Reversible Air-Conditioner, Heat Pump Warms and Cools;是由 上海日美阀门制造有限公司提供的阀门新闻,中文译文仅供参考(上海日美阀门制造有限公司还生产 锻钢阀门 疏水阀 电磁阀 隔膜阀 旋塞阀 及伸缩蝶阀,弹性座封闸阀,消防专用闸阀,真空蝶阀,旋启式止回阀,欢迎您的选购。)
以下是参考译文:

译文:
在热泵的效率 - 即它的温度变化,用电量每单位生产量 - 随室外温度适宜的室内温度。政府要求热力泵能使用标准的标签称为季节能效比,测量,结合在所有条件下的效率评级。 (与此相关的措施,能效比,用于传统的空调。)请与您的电力公司从一个前私人承包商购买,许多公用事业支付回扣,如果热泵的效率达到最低标准。效率提高 新型热泵设计更有效率比旧的。原因之一是,大多数的设计变量运行速度保持在理想水平的室内温度,而传统的冷气机或炉运行了一段时间,以获得房子最合适的温度,然后关闭,直到关闭温度漂移出所期望的范围。连续操作手段提高效率,消除了很多屋主已经有异议的,有冷空气从启动管道爆炸的特点。 在北卡罗来纳州和其他地方的权力,热泵专家强调,工作权,热泵系统,必须深思熟虑。住宅强迫空气加热,对使用天然气的转换并不总是一件好事,因为现有的热空气系统打击空气加热到120度左右的候选人。热泵可只生产90或100度,因此它必须通过更高的移动速度,更多的空气导管可以导致上空响起。 新热泵的设计,生产高温度的空气,也可以是至关重要的。在冬季,空气低于体温可以创建一个草案,感觉寒冷,即使是温暖足以提高室温到预期的水平。 另一个关键问题是规模。如果热泵太大,它不会有非常努力地工作,以冷静的房子,但有一个缺点。湿度是空气中删除当它传递了一个寒冷线圈,但如果系统是太大,就会降低摆在了所有空气有机会经过线圈离开房子凉湿冷,温度。 图片:图片:贾森米尔斯,左,杰拉尔德斯科特安装热泵。在杰克的背景是波托马克电力公司史蒂文森。 (乔治塔梅斯为纽约时报)图:“一个用来加热和温度的冷却泵,”显示了如何从室外空气凉爽冬季热泵提取热量并传送到房子,使用诸如空气中的一个压缩机空调和冰箱。夏季,推动压缩机冷却相反的方向,因此从室内系统中提取热量并把它外面。 (纽约时报,由约翰帕帕西安插图)