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ICS HEAT PUMP TECHNOLOGY A New Method Of Sanitary Hot Water Production & Thermal Storage Low Carbon C02 Heat Pump With 90°C Output Temperature

As we continue into the era of the Carbon Reduction Commitment programme and greater focus is placed on reducing energy use across industry it is clear that technology will move forward and new equipment will be launched that has not previously been available to the UK market.

This is the case with the ICS-C02 Commercial Heat Pump; the type of unit that has been applied in Japan for over five years with over 2,500 units already in use and now the C02 Sanitary Hot Water Heat Pump is available in the UK from ICS Heat Pump Technology.

The heat pumps provide a means of producing high temperature hot water at temperatures up to 90°C. ICS Heat Pump Technology says that this equipment provides a practical proven low energy & low carbon alternative to conventional on demand sanitary / DHW commercial boiler systems.

The application of these units is relevant across a number of industries which all offer huge potential for specifying these low carbon high temperature heat pumps to provide high temperature hot water for commercial or industrial use.

This hot water can be utilised for a variety of applications which can reduce the amount of fossil fuel used alongside achieving significant levels of carbon reduction with tangible fuel cost savings.

The applications for the high temperature 90°C Heat Pump includes the provision of:

· High temperature 80°C to 90°C sanitary hot water for hotels, hospitals and other high volume DHW users.
· Production & process hot water for manufacturing applications.

The high temperature ICS C02 Heat Pump is also able to take advantage of off peak or low cost demand driven electricity tariffs to provide stored thermal energy which can provide substantial operational savings. This concept of thermal storage with heat pumps is relatively new to the UK basically because existing heat pumps do not provide the high temperatures required for high volume thermal storage i.e. to store the maximum amount of energy in a thermal storage cylinder the temperature of the stored water needs to be as high as possible.

This is where the ICS unit really wins in being able to provide 90°C temperatures as opposed to the 50°C temperatures available from the majority of heating application focused commercial heat pumps that are available within the UK market.

The higher the stored temperature the greater the amount of energy that is able to be stored within the tank and hence the storage cylinder can be more compact. But more importantly if we consider usable hot water temperatures of 48°C+ we clearly need a temperature a lot higher than 50°C if we are to create any meaningful amount of thermal storage.

Example : Use the ICS C02 Heat Pump to produce 40kW of thermal energy (at over 80°C) per hour for 10 hours on a low cost overnight electricity tariff and accumulate 400kW of high temperature hot water/thermal energy for use during the following 24 hours.

Importantly these CO2 units operate with a high COP (efficiency) when providing output water temperatures in excess of 70°C i.e. increasing from an inlet temperature of mains water supplied at 10°C.

The greater the temperature increase the higher the C02 heat pump efficiency.

Note: It is very practical to store thermal energy by operating the 90°C C02 Heat Pump unit with a thermal storage system, BUT it is clearly difficult for a commercial or industrial site to store low cost electrical energy. The opportunity to apply electrically driven high temperature heat pumps as a means of STORING THERMAL ENERGY can reduce a company's energy costs significantly and also very importantly allow a site to achieve real reductions in carbon emissions.

Garry Broadbent of ICS Heat Pump Technology comments," These C02 units really do move the goal posts with regard to potential heat pump use and applications", continuing, "now we are able to efficiently achieve temperatures in excess of 80°C this means that heat pump use & application really does move away from the standard idea of commercial heat pumps simply providing heating. These C02 units can be taken seriously as high temperature hot water generators for industry".

ICS Heat Pump Technology also point out that the ability to store high temperature hot water is one of the main benefits of the units application in Japan along with the fact that C02 as a natural refrigerant has global warming potential of 1 (GWP 1).

ICS stress that these units enable electrical energy to be converted into thermal energy and then used over the following 24 hours according to demand. Therefore low cost overnight electricity tariffs can be used to power the heat pumps but also as the UK continues to deliver a higher percentage of electricity generated by wind power and solar PV this type of heat pump allows renewable electrical energy to be utilised when it is available.

This allows renewably generated electricity to power renewable heating at any time of the day or night, this low cost & low carbon electricity is available to drive the high temperature heat pump and hence store thermal energy which can be treated as a thermal battery of stored energy.

The ICS C02 Heat Pump is NEW to the UK but this type of heat pump is certainly well proven in other markets.