Method and apparatus for monitoring a refrigeration-cycle system

Patent metadata

Field	Value
Publication number	US-9017461-B2
Application number	US-201313836043-A
Country	US
Kind code	B2
Filing date	Mar 15, 2013
Priority date	Aug 11, 2004
Publication date	Apr 28, 2015
Grant date	Apr 28, 2015

Abstract

A monitoring system for monitoring operation of a refrigerant-cycle system is disclosed. A differential pressure sensor measures a pressure difference between: (i) air at a first location upstream of an evaporator of the refrigerant-cycle system; and (ii) air at a second location downstream of the evaporator of the refrigerant-cycle system. An electrical sensor measures an electrical quantity indicative of power consumption of the refrigerant-cycle system. A processing system determines whether airflow through the evaporator is restricted based on the pressure difference. The processing system calculates an efficiency of the refrigerant-cycle system based on the power consumption of the refrigerant-cycle system.

First claim

What is claimed is:

1. A method of monitoring operation of a refrigerant-cycle system, the method comprising:
measuring, using a differential pressure sensor, a pressure difference between:
air at a first location upstream of an evaporator of the refrigerant-cycle system; and
air at a second location downstream of the evaporator of the refrigerant-cycle system;

measuring, using an electrical sensor, an electrical quantity indicative of power consumption of the refrigerant-c…

Assignees

• Emerson Climate Technologies

Inventors

• Kates Lawrence

Classifications

• Y10S55/34

  Cross-Sectional Technologies · mapped topic

• F25B2700/21161

  Mechanical Engineering · mapped topic

• G01N2015/0846

  Physics · mapped topic

• F25B2700/2106

  Mechanical Engineering · mapped topic

• F25B2700/1351

  Mechanical Engineering · mapped topic