System solution to improve energy efficiency of HVAC systems

10th International Conference on Compressors and their Systems

Chretien, L.^1 ; Becerra, R.^1 ; Salts, N.P.^2 ; Groll, E.A.^2

Regal, 1946 W. Cook Rd., Fort Wayne

IN, United States^1

Purdue University, Ray W. Herrick Laboratories, West Lafayette

IN, United States^2

关键词: Compressor cycles;    Electronic circuitry;    Heating-and-air conditioning system;    Market penetration;    New constructions;    Temperature and humidity control;    Variable speed compressors;    Variable speed system;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/232/1/012067/pdf
DOI  :  10.1088/1757-899X/232/1/012067

来源: IOP

【 摘 要 】

According to recent surveys, heating and air conditioning systems account for over 45% of the total energy usage in US households. Three main types of HVAC systems are available to homeowners: (1) fixed-speed systems, where the compressor cycles on and off to match the cooling load; (2) multi-speed (typically, two-speed) systems, where the compressor can operate at multiple cooling capacities, leading to reduced cycling; and (3) variable-speed systems, where the compressor speed is adjusted to match the cooling load of the household, thereby providing higher efficiency and comfort levels through better temperature and humidity control. While energy consumption could reduce significantly by adopting variable-speed compressor systems, the market penetration has been limited to less than 10% of the total HVAC units and a vast majority of systems installed in new construction remains single speed. A few reasons may explain this phenomenon such as the complexity of the electronic circuitry required to vary compressor speed as well as the associated system cost. This paper outlines a system solution to boost the Seasonal Energy Efficiency Rating (SEER) of a traditional single-speed unit through using a low power electronic converter that allows the compressor to operate at multiple low capacity settings and is disabled at high compressor speeds.