| Work Detail |
Israeli developer Tigi Solar is implementing an industrial heat pump to support the heating system at the premises of a food industry company in Israel.
Israeli solar thermal specialist Tigi Solar has announced that it has been selected by food industry company Of Galil Ltd to install the countrys first renewable heating system based on an industrial heat pump.
The heating system will mainly be used to wash and clean the production lines and floors twice a day. The feed water is running water and the hot water is stored in two tanks of 70 m3 each.
“The customer is currently using steam to heat the feed water for this application,” a Tigi Solar spokesperson told pv magazine . “The steam generator is powered by Mazut, which is a low quality heavy fuel oil. It will now be decommissioned and will help the customer reduce operating costs and maintenance efforts.”
The industrial heat pump used for the project has a power of 780 kW and a coefficient of performance (COP) of 4.6. It measures 1.7 m² x 5.3 m² and has a weight of 6.6 tons. It uses the waste heat from the existing ammonia chiller as a heat source, which improves the performance of the existing chiller and can reportedly provide a hot water temperature of 65ºC.
The heat from the heat source is transferred to the heat pump through a closed circuit with an intermediate heat exchanger that allows the inlet temperature to the cold side of the heat pump to be controlled at approximately 17ºC. A 5 m3 surge tank helps flatten occasional spikes and smooth operation.
Tap water is also heated by a closed circuit with an intermediate heat exchanger, to prevent the formation of calcium carbonate deposits in the heat exchanger of the heat pump. There is also a redundant heat exchanger to allow periodic cleaning of the heat exchanger without stopping normal operation.
“The heat pump is sized to heat tap water from 15ºC to 65ºC at a flow rate of 14m3/h,” the spokesperson said, adding that the company is also implementing machine learning to optimize the cost of generation based on in patterns of energy use, variable cost of electricity and use of thermal storage. |
