Recovery Systems: How to Improve the Energy Efficiency of Buildings

It’s known than buildings are responsible for 40% of the total primary energy consumption and major part of the energy consumed in buildings is used for HVAC and heating systems. Of course, these values are greatly depending on climate conditions, but in any case a set of measures aimed at developing energy efficient solutions and optimization of building systems efficiency should be considered.

One way to improve the building energy efficiency is the hot water generation through the application of heat pumps and chiller systems with heat reclaim capabilities. The standard approach to design of the HVAC systems is meant that condensing heat is rejected to atmosphere through cooling towers or remote condensers (see the circuit schematics). Heat recovery systems this wasted heat is used for customer needs. To this end, Carrier has developed a number of reliable, cost-effective solutions that can reduce CAPEX and OPEX for heating of real estate. It could be highlighted two categories of heat recovery products:

1. Heat pump, reversible on the hydraulic side. Primary function is producing of hot water and control temperature of leaving condenser water.

2. Heat reclaim chillers are controlled chilled water set point and produce of byproduct heat and maintaining the temperature of coolant (water) for air-conditioning and disposal of condenser heat is a by-process.

Note that the main focus of this article is accent on water-cooled chillers and heat pumps. Reversible heat pumps and aircooled heat reclaim chillers and packaged air-cooled condensers will be detailed separately.

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Materials provided by AHI Carrier