Highly efficient heat pump from thermea.
R744.com - 2009-02-24
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After sparking high interest in their newly developed large scale heat pumps at last year’s trade fair Chillventa, thermea. is now adding its CO2 high temperature model “thermea. HHS 1000” to R744.com. The heat pump features highest performance while saving up to 50% of energy costs.
Highly efficient heat pump from thermea. thermea's HHS 1000 heat pump model can achieve a Coefficient of Performance (COP) of 7.0 for both heating and chilling combined, and an COP of 4.5 for heating only. This makes it a highly efficient tool for simple heating but also for drying processes and preheating processes in industrial applications, such as large hospitals. Besides using the environmentally friendly working fluid CO2, it features a high heat capacity of up to 4.0 MW, a potential flowing temperature of up to 80°C and a maximum energetic efficiency. HHS 1000 is hence an optimal choice for the recovery of industrial waste heat of low temperatures and thermal coupling in industrial environments. By further development higher temperatures up to 130 °C will be reached.

The thermea. heat pump comes into play whenever an industry requires process heat which is normally generated through the application of fossil fuels. Instead of wasting energy by discharging the remaining heat through expensive cooling towers, the HHS 1000 model creates valuable reusable heat. As a results, it is highly cost efficient through the use of waste heat, reduced operating costs , and by making both exhaust-gas systems and fuel storage unnecessary.

At last year’s trade show Chillventa, thermea’s newly developed heat pump model attracted high interest from European and Asian experts looking for high-performance heating in large-scale applications. It is the result of more than 30 years of experience combined in the field of cooling and heat pump technology thermea. can build on.

Basic Specifications

Main features of thermea. HHS 1000 are:
  • Design: screw compressor
  • Heat output: 750 to 4000 kW
  • Outlet temperature: up to 80°C
  • Temperature of heat source: approx. 8 to 35°C
  • COP heating: max. 4.5
  • COP heating and chilling service: max 7.0
  • Dimensions: 5,500 x 3,300 x 2,800mm
About thermea.

The thermea. Energiesysteme GmbH, founded in March 2008, belongs to the bw-energiesysteme group. The team has more than 30 years of experience in the field of plant engineering and energy management. thermea. offers the complete services range of consulting, planning, financing, delivery and assembling.
Contact Information
If you would like to contact thermea. for any enquiries, you may send a request to Eberhard Wobst directly.
More Information
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Displaying 1 to 5 of 10 comments | Go to page: 1 2
2010-02-08 15:36:32 - Wynand Groenewald
Dear Eddy Jansen

Are you only looking for CO2 heat pumps to be used for houses or are you interested at heat pumps for larger use as well? We have CO2 heat pumps that range from 25kW and upwards. We are currently looking at smaller heat pumps for domestic use... We are situated in Vereenging South Africa.Please let me know if I can be off assistance.

Regards
Wynand Groenewald
2010-02-08 12:57:02 - EDDY JANSEN
KINDLY SEND ME INFORMATION WITH REGARDS TO HEAT PUMPS FOR USE IN HEATING WATER IN HOUSES,THANKS,EDDY JANSEN CAPE TOWN SOUTH AFRICA.
2009-08-10 06:38:57 - Grant Knight
Dear Thermea,

As you can see, below, I work for the New Zealand Government, Ministry of Agriculture and Forestry. One of my responsibilities is to find new ways of destroying pests such as insects, spiders, snails and fungi that come into New Zealand ports in shipping containers packed with cargo. At present this is done by fumigating with methyl bromide, a toxic gas, that is very efficient, but has been shown to be a ozone-layer damaging chemical. It is being phased out because of this.

An alternative, environmentally-good way to decontaminate the containers is by heat treatment. There is a international heat treatment standard known as ISPM15 that specifies an air temperature of 56 degrees C held for 30 minutes that will kill all pests & their eggs & pupae. I would like to use this standard time & temperature to investigate this method of treatment, but do it using a portable heat pump as the heat source.

Many containers are treated when some unwanted pest is found while unloading at a factory and a treatment operator is called. So, the heat pump would need to be able to be mounted on a light truck or trailer and taken to the container. Electrical power is always available at the treatment site. We would like to avoid burning liquid fuel or gas to produce the heat, and instead use electricity (about 77% hydro, geothermal or wind generated in New Zealand), and take advantage of the high COP of heat pumps.

The suggested treatment procedure is that:

One of the container doors is replaced for the duration of the treatment by a panel with inlet and outlet air ducts so air can be circulated through the container
The air volume within the container is recirculated, in a closed circuit, by ducting, through a heat pump heat exchanger and heated to 56 degrees C
When the required temperature has been achieved, this steady-state is held for the required 30 minutes

I realise 56 degrees C air temperature is getting to the top end of what most heat pumps are capable of supplying, using the most common systems, and working fluids.
Is it a problem to modify systems to supply the extra 6 degrees.
Is a specialised system required, a working fluid such as R744?
What do you suggest as a starting point (I note most heat pump hot water systems are standardised to produce hot water at about 65 degrees C… could one of those be adapted?)

The interior volume of a standard 40-foot shipping container is 67 cubic m. They are usually at least half full of cargo, so the volume to be turned over and recirculated is about 30 - 40 cubic m. Containers have steel walls that will transmit a lot of heat back to the environment (but they can be covered with a tarpaulin) and the cargo may be a strong heat-sink depending on what it is, so I estimate, (I'm no expert so may be a long way out), a requirement for something in the 10- 20 kW range to get enough heat output. There will probably need to be a supplementary blower to give a strong circulation through the container.

I would value you advice on:
Is this possible?
What sort of heat-pump would do it best?
Can a commercial heat pump be modified to create this air temperature and be mounted on a truck or trailer?

Thank you…

Best wishes,

Grant Knight



Grant Knight | Senior Container Risk Profiler | Analysis & Profiling Group
MAF Biosecurity New Zealand | Border Standards Directorate
Level 7 | Ballantyne House, 101 Customs Street E. | Auckland 1010
New Zealand
( +64 (9) 909 3513 | + PO Box 106 231, Auckland 1010 | Cell +64 29 909 3513
Email grant.knight@maf.govt.nz | Fax +64 9 909 3569

2009-04-27 16:26:08 - David Ma
Dear Sir:

Hello. I understand that Germany r744.com site thermea Energy Systems Limited on the CO2 heat pump-related products that are very interested in, hope to learn more about the company and product performance characteristics, CO2 heat pump products and the specific use of the use of premises. David Ma Nanjing, China April 27, 2009

magb66@163.com
2009-03-07 02:42:55 - Klaas Visser
Dear Dr Wobst, please see my questions below and favour me with a private answer to my questions, if you do not wish your answers to be known widely. The reason for asking all the specific questions is that I have printed your extensive brochure. The brochure is long on the economic benefits of your heatpumps, which are pretty much as you say and, indeed, with single and particularly two stage transcritical reciprocating compressors with heat recovery from the interstage (one of my dear late friend Gustav Lorentzen's many Ideas), can be even better. However, the brochure is short on technical detail and hence my questions.
For all I know you may have achieved a major breakthrough in screw compressor design!

In the context of our inustrial sector permit me to quote Lord Kelvin, who was president of the British Royal Society (as was Sir Isaac Newton) when he said in 1895 and I quote: "Heavier-than-air flying machines are impossible!" I wonder what Lord Kelvin would think and say if he were alive today and saw a full and down Airbus A380 weighing 530 tonnes lumber down a 3.2 km long runway and rise in the air at a speed of at least 250 km/hr. Or what Bill Gates' views are now after he said in 1981 and I quote: "640 kB (of computer memory) ought to be enough for any body."

However, having used many single and, some internally two staged, screw compressors (two rotors on one shaft with one oil supply and no intercooling) for industrial ammonia applications for the past 40 years or so, my questions are based on that experience.

So please answer my questions either to me privately, or better still, in this excellent open forum., from which I learn something new every day.
I am sure there are other people interested in the answers. My list of questions is by no means exhaustive as there are many others requiring answers in due course.

Thank you in anticipation for your reply.

With best wishes and kind regards

Yours sincerely

Klaas Visser.
Displaying 1 to 5 of 10 comments | Go to page: 1 2
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