American Heat pumps required

[chemi-cool]

Hi all. A friend is looking for a US manufacturer of heat pumps.

The needed specifications are:

10 to 15 KW heating capacity. COP of 3.5 to 3.8
55°C to 60°C outlet temp.
The heat pumps will fill a 2000L to 2500L insulated tank.

The main use will be washing and showers.

Thanks for any input.

[Tesla]

Hi chemi-cool
If you are using hot water for those purposes you would definately want to check out the GFX gravity feed heatexchanger. This product is made in USA and can save upto 40% ie put that heat from the drain back into the system, thereby reducing the required heating. If you look at the design it can be modified to fit a common drain (large). For calcs if you need them - I found them in perrys chemical encyclopedia. With the above heat reclaim system you could reduce the size of tank required or even better use instantanious heating with a heatpump and have no tank. If the tank is a cylender for maximum efficiency the diameter should be about ratio of 1 to a height of 2, this gives maximum volume and minimum surface area. Sorry for not answering your main question but I just can't heop myself when it comes to energy efficiency, I hope this info helps anyway.

[frank]

Hi Chemi.....Why US manufacturer?

[mad fridgie]

Chemi, what is the heat source, water, air? and what temperature.
There is a big difference between 55C and 60C. (effects COP and performance)
Tesla, heat recovery from drains has been around for many years, the theory is somewhat different to the practice, yes can be upto 40% practically is about 20% ( the reduction is due to thermal length and long term fouling.
Can not use heat pumps for instantaious heating, short cycling would always be a problem, so a tank will always be needed.
In this case indications are that chemis client uses short bursts of lots of water, (diversivied load of a daily period)
There are limited manufactures of these type of high temp heat pumps (If we ingnore pure sales hype)

[chemi-cool]

Air to water heat pumps.

[mad fridgie]

Air to water heat pumps.
What is the design air temp?
Is this a Hotel/Motel?

[chemi-cool]

Iam just trying to help a friend and thets all the info I have.

[desA]

Hi all. A friend is looking for a US manufacturer of heat pumps.

The needed specifications are:

10 to 15 KW heating capacity. COP of 3.5 to 3.8
55°C to 60°C outlet temp.
The heat pumps will fill a 2000L to 2500L insulated tank.

The main use will be washing and showers.

Thanks for any input.

Hi Chemi,

I'm going out on a limb here, but, I'd say that the better AWHP's will be coming out of suppliers who supply into the southern hemisphere (Australia, NZ, South Africa), or Asia.

If your friend lives in the US, then he could possibly simply localise a generic technical design from an outside supplier. That's of course if he manufactures. If it's just for his own use, then there should be a few available manufacturers in the US. From what I saw, HWHP's were a fad in the US around 2002, then quickly faded off the main horizon, due to the energy glut & general lack of interest in energy conservation. There should still be a few manufacturers around though.