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Energy efficient capacity control for an air conditioning system

a technology of energy-efficient capacity control and air conditioning system, which is applied in the direction of cooling fluid circulation, domestic cooling apparatus, lighting and heating apparatus, etc., can solve the problems of lack of electric power, fuel consumption and maintenance costs of overnight idlers, and lack of available electric power

Inactive Publication Date: 2006-06-01
MODINE MFG CO
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, concern over pollution, both air and noise, is creating the potential that trucks will no longer be allowed in some instances to idle their engines in order to operate the air conditioning for the sleeper cab.
In addition to concerns over pollution, it has been estimated that the costs for overnight idling include $2,400 per year in fuel consumption and $250 per year in added maintenance.
The main reason for not using this reliable means of providing air conditioning is the lack of available electric power.

Method used

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  • Energy efficient capacity control for an air conditioning system
  • Energy efficient capacity control for an air conditioning system
  • Energy efficient capacity control for an air conditioning system

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Embodiment Construction

[0048] With reference to FIGS. 1 and 2, the invention provides an electrically driven, hermetic, vapor compression A / C system 10 that will maintain comfortable temperatures in a vehicle, shown schematically at 12, without operating the main engine by utilizing an electronic control scheme or controller 14 that efficiently matches the cooling output to the cooling requirements.

[0049] Wind tunnel tests were run on a typical class H sleeper cab 16 and some additional computer calculations were done to determine the cooling requirements for the cab 16. The results are shown in FIG. 3 of this application. Preferably, the system 10 according to the invention matches or attempts to match the cooling requirements exactly in order to operate the A / C system 10 in the most efficient manner.

[0050] This system 10 consists of selected air conditioning components and sensors that can be controlled to deliver cooling capacity as required while minimizing the power consumed. Preferably, the system...

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Abstract

An air conditioning system (10) is provided for cooling a compartment (16) of a truck when the main engine is not running. The system (10) includes a variable speed compressor (20), a variable speed condenser fan (22), a variable speed evaporator blower (24), and a controller (14) configured to optimize the cooling capacity of the system (10) to the cooling requirements of the compartment (16) by selectively adjusting the speeds of the variable speed components (20,22,24).

Description

CROSS-REFERENCE TO RELATED APPLICATION [0001] This application is a continuation-in-part application of Ser. No. 11 / 130,576, filed May 17, 2005, which claims priority to provisional application Ser. No. 60 / 572,654, filed May 18, 2004, entitled “Energy Efficient Capacity Control for an Air Conditioning System”.FIELD OF THE INVENTION [0002] The invention relates to vehicle air conditioning systems, and in more particular applications to air conditioning systems for the sleeper cabs or compartments of large trucks. BACKGROUND OF THE INVENTION [0003] Currently, air conditioning systems for vehicles, and particularly for the sleeper cabs of large trucks, is provided via an engine driven air conditioning system. However, concern over pollution, both air and noise, is creating the potential that trucks will no longer be allowed in some instances to idle their engines in order to operate the air conditioning for the sleeper cab. In addition to concerns over pollution, it has been estimated ...

Claims

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Application Information

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IPC IPC(8): F25D17/04F25B49/00F25D17/00F25B1/00B60H1/00B60H1/32F25B49/02F25D29/00
CPCB60H1/00378B60H1/3205B60H1/322B60H2001/325B60H2001/3255B60H2001/3261B60H2001/3263B60H2001/3266B60H2001/3272B60H2001/3282B60H2001/3292F25B49/02F25B49/025F25B2600/0253F25B2600/111F25B2600/112F25B2600/21F25B2700/1931F25B2700/1933F25B2700/2104F25B2700/21151F25B2700/21152F25B2700/2116F25B2700/21173F25D29/003F25D2700/12
Inventor MARTIN, GEORGEGALLOWAY, CAROL S.
Owner MODINE MFG CO
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