York HVAC Catalogue 2018 EN 2019 EN | Page 76

Heat Pump Solutions According to the Environmental Protection Agency (EPA), it is estimated that 5% of the world’s daily energy consumption is expended on fuel for heating water. Additionally, in Western European countries, 25 % of primary energy used is for cooling and heating applications. As pressure continues on natural resources and energy bills continue to rise, we must seek new, environmentally friendly solutions. One smart option is to improve the energy utilization of your facility’s heating and cooling system by recycling heat energy that would otherwise be rejected. This can be accomplished with a Johnson Controls heat pump. At Johnson Controls we set standards without compromising our core principles: and when passion and innovation come together, great things happen! What is a Heat Pump? Heat pumps are designed to produce hot water at a specified temperature. Heat is extracted from a low-temperature source such as air, ground water, or waste process heat, and its temperature is raised to a level where it can be used in alternative processes. There are 4 primary system designs for heat pumps: 1) Air-source – An example of this is the heat pump you may have in your home. 2) G  round-source – This system uses the ground as the heat source, often used in residential or light commercial applications. 3) Water-source – This system uses a building’s water supply to transfer heat. This is the most commonly used system. 4) Cascade-source – The system uses heat from existing refrigerant systems or any available waste heat source. Heat Source Outside Condenser air heat Surface water Ground water Heat Sink Heat pump Air treatment Floor heating Process water Tap water Traditionally, chillers are used to provide a building’s required cooling load (rejecting heat to atmosphere via cooling towers) and boilers supply hot water to meet the building’s heating needs. Using a Heat Pump gives increased system efficiency and lowers operating expense as they can supplement or even replace existing heating systems, and can also operate in reverse cycle to provide cooling during the summer. There are also processes in which cooling and heating functions perform simultaneously. Again, heat pumps are an ideal solution to this challenge. 76