Method and apparatus for monitoring a refrigeration-cycle system

Patent metadata

Field	Value
Publication number	US-9023136-B2
Application number	US-201313835621-A
Country	US
Kind code	B2
Filing date	Mar 15, 2013
Priority date	Aug 11, 2004
Publication date	May 5, 2015
Grant date	May 5, 2015

Abstract

A monitoring system for monitoring operation of a refrigerant-cycle system is disclosed. A first temperature sensor measures a first temperature of air at a first location downstream of an evaporator. A second temperature sensor measures a second temperature of air a second location upstream of the evaporator. A processing system determines a temperature drop across the evaporator based on the first temperature, the second temperature, and a humidity of air. The processing system that determines whether airflow through the evaporator is restricted based on the temperature drop across the evaporator.

First claim

What is claimed is:

1. A method of monitoring operation of a refrigerant-cycle system, the method comprising:
measuring a first temperature of air at a first location downstream of an evaporator using a first temperature sensor;
measuring a second temperature of air a second location upstream of the evaporator using a second temperature sensor;
determining a humidity of air; and
using a processing system, determining a temperature drop across the evaporator based on the firs…

Assignees

• Emerson Climate Technologies

Inventors

• Kates Lawrence

Classifications

• F25B2700/21172

  Mechanical Engineering · mapped topic

• G01N2015/084

  Physics · mapped topic

• G05D23/1928

  Physics · mapped topic

• F25B49/00

  Mechanical Engineering · mapped topic

• Y10S55/34

  Cross-Sectional Technologies · mapped topic