Ice-Storage Packaged Air Conditioners.

Development of Liquid Refrigerant Pump for Ice-Storage Packaged Air-Conditioners

This paper presents the development of the low cost liquid pump. The rotary compressor developed as the gas compressor for the residential air-conditioner was converted into the liquid refrigerant pump. Problems of the liquid refrigerant pump are the reliability assessment of sliding parts and the reduction of the noise generated by discharge pulsation in this development. Therefore some modifi...

Simple Fault Detection and Diagnosis Methods for Packaged Air Conditioners

Automated Fault Detection & Diagnostics for Rooftop Packaged Air Conditioners

Maintenance for rooftop packaged air conditioners (RTUs) is a rare preventative practice. Generally, service calls are limited to emergency response for major system failures that impact occupant comfort. Even in the case of equipment maintained under service contracts, technicians will only detect severe and obvious faults since their procedures typically only involve routine qualitative asses...

The Impact of Evaporator Fouling on the Performance of Packaged Air Conditioners

Optimal Energy Reduction Schedules for Ice Storage Air-Conditioning Systems

This paper proposes a hybrid algorithm to solve the optimal energy dispatch of an ice storage air-conditioning system. Based on a real air-conditioning system, the data, including the return temperature of chilled water, the supply temperature of chilled water, the return temperature of ice storage water, and the supply temperature of ice storage water, are measured. The least-squares regressio...