Author

Message

2008-12-17 11:42:11

Coming soon: thermea. large scale CO₂ heat pump

Up to 50% of energy costs could be saved, if big facilities, including hospitals, the food processing industry and industrial plants, would switch from conventional boilers to thermea.’s latest product innovation. The high temperature heat pump, soon to be presented on R744.com, features highest heating capacity and maximum energetic efficiency.

View article

RE: Coming soon: thermea. large scale CO₂ heat pump

React to this Post

This is a great news!
Congratulation.

RE: Coming soon: thermea. large scale CO₂ heat pump

React to this Post

Is there any interest at all in the United States?

RE: Coming soon: thermea. large scale CO₂ heat pump

React to this Post

We would have strong interest in working with you in the US (and actually North American) market.
Please contact me.
Thanks,
Michael

RE: Coming soon: thermea. large scale CO₂ heat pump

React to this Post

I wish to congratulate thermea on their initiative. However, the benefits of using CO₂ heating and cooling go a lot further than usually appreciated.

My various case studies have shown that energy savings of 50% are a conservative estimate of potential energy savings in cases where simultaneous heating and cooling are required such as a number of foodprocessing operations and particularly pig and chicken slaughter.

In hospitals larger savings are possible, particularly if attention is paid to the total energy inputs of air circulating and return fans, which are parasitic refrigeration loads and thus require compressor energy to be removed from the circulating air. Therefore, the lower the fan energy consumption the lower the cooling load and the lower the compressor power will be.

This represents an optimisation problem. In generaI terms it will be found, that the total minimum energy input into an AC system is at a lower COP than one would normally select after manipulating the required airflow and duct velocities.

The outstanding advantage of using CO₂ for the heating and cooling of office buildings, hospitals etc. is that it may be retrofitted into existing facilities with reductions in energy consumption (both electricity and fuel), corresponding reductions in greenhouse gas emissions, reduced cooling water consumption in cooling towers and at the power stations, and the entire elimination of HFC
fugitive gases and the threat of legionella disease.

Please see my paper "A CASE STUDY INTO THE APPLICATION OF CO₂ COOLING AND HEATING
IN AMERICAN OFFICE BUILDINGS" by Klaas Visser. It was presented at the 8th IIR Gustav Lorentzen Conference on Natural Working Fluids at Copenhagen, Denmark on 9 September last.
For new buildings the following reductions are predicted

Primary Energy ie calorific value in the energy fuel source 63.5%
Gas concumption 100 %
Electrical Energy 52.4%
CO2 gas emissions 61.8%
Energy cost reduction (electrical energy plus gas) 65.3%
Cooling water at the cooled buildings only 79.1%
I would be pleased to send copies of my paper(s) to anyone interested. The results for hospitals are even better due to the fact that hospitals operate 24/7 365 days per year.

Yours sincerely

Klaas Visser
Principal
KAV Consulting Pty Ltd
PO Box 1146
Kangaroo Flat VIC 3555
AUSTRALIA
kavconsult@bigpond.com
T + 61 3 54 479 436
F + 61 3 54 479 805

RE: Coming soon: thermea. large scale CO₂ heat pump

React to this Post

Dear Mr. Eberhard Wobst:

This is Richard Minn who has communicated with you several times before.

Congratulations on your becoming a partner of www.r744.com !

Let's keep in touch from time to time.


Sincerely and truly,
Richard Minn