초록 ▼

A rotary displacement compression heat transfer system and method for improving its efficiency includes a rotary displacement compressor for compressing a refrigerant, a condensor connected with the outlet of the compressor, an evaporator connected with the inlet of the compressor, an oil pump for i

A rotary displacement compression heat transfer system and method for improving its efficiency includes a rotary displacement compressor for compressing a refrigerant, a condensor connected with the outlet of the compressor, an evaporator connected with the inlet of the compressor, an oil pump for injecting oil into the compressor, an oil separator for separating out the oil and recirculating it to the compressor, a non-chlorinated hydrocarbon refrigerant, and a synthetic oil ingredient in the oil providing an inverse solubility characteristic where a mixture of the refrigerant and oil has two immiscible phases in the compressor\s operating temperature range and has only one dissolved liquid phase at a temperature in the evaporator\s operating range at a weight concentration of oil less than about 5%.

대표청구항 ▼

In a refrigeration or heat pump system including an oil-injected compressor for compressing a refrigerant, a refrigerant, a condenser in connection with the outlet of the compressor, a evaporator in connection with the inlet of the compressor, an oil, an oil injection means for injecting the oil int

In a refrigeration or heat pump system including an oil-injected compressor for compressing a refrigerant, a refrigerant, a condenser in connection with the outlet of the compressor, a evaporator in connection with the inlet of the compressor, an oil, an oil injection means for injecting the oil into the compressor, an oil separator, and means for recirculating the separated oil to the oil injection means, the improvement wherein the refrigerant is a non-chlorinated hydrocarbon and the oil includes an oil ingredient proportion of such a synthetic type as to provide an inverse solubility characteristic that forms two insoluble phases in the compressor, one an oil-rich phase and the second a refrigerant-rich phase, whereas within a temperature range of -40°C. to +20°C. said mixture can form only one soluble phase in the evaporator at a weight concentration of oil to refrigerant less than 5%.