Patent ID: 7587911
Filing Date: 2009-09-15
Classification: F25B,F28D,F28F

Abstract:
1. An evaporator for a chilled fluid system comprising: a shell comprising a first end and a second end; a plurality of tubes disposed in the shell to circulate refrigerant through the shell; a plurality of shell inlets in fluid communication with the shell to deliver a fluid to exchange heat with refrigerant in the plurality of tubes, at least one shell inlet being disposed adjacent to the first end and at least one other shell inlet being disposed adjacent to the second end; a shell outlet in fluid communication with the shell to discharge the fluid from the shell, the shell outlet being arranged and disposed to receive the combined fluid delivered to the shell by the plurality of shell inlets; and one of an evaporating temperature of the evaporator being substantially independent of a direction of refrigerant flow in the plurality of tubes, a cooling capacity of the evaporator being substantially independent of the direction of refrigerant flow in the plurality of tubes, a rate of heat exchange of the evaporator being substantially independent of the direction of refrigerant flow in the plurality of tubes, a ratio of a shell length to a shell inner diameter being greater than about 5:1, or the outlet being disposed substantially at a mid-point between the first end and the second end.