Experimental Results on Advanced Rotary Desiccant Dehumidifiers

The Solar Energy Research Institute (SERI) has developed the Cyclic Test Facility (CTF) to develop and validate analytical methods for evaluating and predicting the performance of advanced rotary dehumidifiers. This paper describes the CTF, the dehumidifiers tested at the CTF, and the analytical methods used. The results reported provide an engineering data base and a design tool for evaluating rotary dehumidifiers for desiccant cooling applications

Replacement Refrigerants for Water Chillers

The Montreal Protocol requires large water chillers cease using refrigerants 11, 22 and 123. Comparing thermodynamic and transport property parameters for these, 134a, 290, 601, 601a, 717 and pentaï¬uoroiodoethane avoids certain errors and biases. The parameters for R71 7 (ammonia) offer energy savings about 20%. R290 or 717 can replace 22. The pentane mixture R601 /601a [50/50] with an electronic 38% rotor speed increase can economically replace R11

2004: Usage and risk of hydrocarbon refrigerants in motor cars for Australia and the United States

The measured US fire, injury and cabin overpressure frequencies are less than 3.2 × 10 −7 per car year with high probability. This fire frequency is a hundred times lower than predicted because most R290/600a leaks in MACS use are effectively nonflammable