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The hunt for the most efficient heat pump in the world

wired.com

11–16 of 16 posts

Re: The hunt for the most efficient heat pump in the world

#11
post #7

> It only takes a little electricity to power this process, which can raise the refrigerant’s temperature by many degrees Celsius. And the same electricity can raise the temperature by even more degrees Fahrenheit!

Heat in F chill in C, et voilà! free energy.

Unit arbitrage. I love it.

Re: The hunt for the most efficient heat pump in the world

#12

> It only takes a little electricity to power this process, which can raise the refrigerant’s temperature by many degrees Celsius. And the same electricity can raise the temperature by even more degrees Fahrenheit!

Using a temperature system built around water to measure air temperature. I mean I can use it but the range of fahrenheit is more useful. What we really need is a combination of the two. Something that measures air temperature and water content because 68F at 5% humidity is a lot different than the same temp at 40%>

Wet bulb temperatures account for evaporation, but I don't know if weather stations report wet bulb or dry bulb.

Re: The hunt for the most efficient heat pump in the world

#13
post #7

> It only takes a little electricity to power this process, which can raise the refrigerant’s temperature by many degrees Celsius. And the same electricity can raise the temperature by even more degrees Fahrenheit!

Heat in F chill in C, et voilà! free energy.

I'd buy that for a dollar!

Re: The hunt for the most efficient heat pump in the world

#14

> It only takes a little electricity to power this process, which can raise the refrigerant’s temperature by many degrees Celsius. And the same electricity can raise the temperature by even more degrees Fahrenheit!

Using a temperature system built around water to measure air temperature. I mean I can use it but the range of fahrenheit is more useful. What we really need is a combination of the two. Something that measures air temperature and water content because 68F at 5% humidity is a lot different than the same temp at 40%>

> What we really need is a combination of the two. Something that measures air temperature and water content because 68F at 5% humidity is a lot different than the same temp at 40%

The "feels like" apparent temperature accounts for things like humidity and windchill[1].

Many weather apps provide the "feels like" temp, including my app: https://uw.leftium.com

I was going to drop the "feels like" reading in my new weather app (I just didn't notice a major difference), but maybe I'll keep it...

[1]: https://www.wikiwand.com/en/Apparent_temperature

Re: The hunt for the most efficient heat pump in the world

#15
post #10

Earlier quoted context omitted.

Using a temperature system built around water to measure air temperature. I mean I can use it but the range of fahrenheit is more useful. What we really need is a combination of the two. Something that measures air temperature and water content because 68F at 5% humidity is a lot different than the same temp at 40%>

> Several accounts of how he originally defined his scale exist, but the original paper suggests the lower defining point, 0 °F, was established as the freezing temperature of a solution of brine made from a mixture of water, ice, and ammonium chloride (a salt). The other limit established was his best estimate of the average human body temperature, originally set at 90 °F, then 96 °F (about 2.6 °F less than the mode…

So that's why one unit Celcius is roughly 2 units Fahrenheit!

For some reason I never noticed there are exactly 180 degrees between freezing and boiling points on the Fahrenheit scale. 100°C is a nice "round" number, and 180°F divides evenly into a lot of smaller numbers.

Re: The hunt for the most efficient heat pump in the world

#16

Love my Bosch heat pump. I noticed when I got rid of solo heater coils for this new air handler and pump was that it managed to keep the air temperature more consistent. What has helped the most however was adding in a humidifier. Dry desert air is unforgiving and adding in water to the air made a huge difference in comfort. 68* F with 40% humidity is much more comfortable than the same with 5%.

Why not get a swamp cooler?
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