Method for improving efficiency in heating and cooling systems

a technology for hvac systems and efficiency improvement, applied in space heating and ventilation control systems, domestic cooling systems, lighting and heating apparatus, etc., can solve problems such as the implementation of user's actions is far easier, and achieve the effect of improving efficiency in hvac systems and increasing the operational efficiency of hvac systems

Inactive Publication Date: 2008-10-30
LIU MINGSHENG
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Benefits of technology

[0014]The present invention provides a method for improving efficiency in HVAC systems, the HVAC system having at least one of a fan and a pump, a motor for driving the pump, at least one air handling unit (AHU), and a heating/cooling system, the method comprising the steps of providing speed and pressure monitoring devices for monitoring and measuring the operational speed (OS) and the head pressure (HR) of the at least one of a fan and a pump and providing a flow rate monitoring device operatively associated with the at least one of a fan and a pump for monitoring and measuring the fluid flow rate (Q) for fluid flowing through the at least one of a fan and a pump. The OS, HR and Q for...

Problems solved by technology

Furthermore, because the system and method of the present invention generally reduces efficiency determinations to the proper operation of the fan or pump in connection with the...

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  • Method for improving efficiency in heating and cooling systems
  • Method for improving efficiency in heating and cooling systems
  • Method for improving efficiency in heating and cooling systems

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[0026]The S-value determination method is an intelligent control algorithm / system for optimally controlling fan / pump speed in heating ventilation and air-conditioning (HVAC) systems, such as those shown in FIG. 1, and in industrial chilling and heating systems having fans and / or pumps therein. This method intelligently modulates the fan (pump) speed to satisfy the desired flow, to maximize the energy system efficiency and to warrant stable end user device control. This method can be applied to variable air or water volume systems in HVAC systems for fan and pump speed control, and to industrial processes as well. FIG. 1 presents the schematic diagram of the S-value determination method, and in the preferred embodiment, the present invention would include the following sensors or signal sources: A differential pressure sensor or signal source is connected to the fan / pump to measure the fan head or pump head pressure, and a fluid flow meter is provided in the system to measure fan air...

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Abstract

A method for improving efficiency in heating and cooling systems which includes the steps of providing speed and pressure monitoring devices for monitoring and measuring the operational speed (OS) and the head (HR) of the fan or pump and providing a flow rate monitoring device for monitoring and measuring the fluid flow rate (Q) for fluid flowing through the fan or pump. The OS, HR and Q for the fan or pump would be periodically obtained from the speed and pressure monitoring devices and the flow rate monitoring device, and the operating S-value of the heating and cooling system would be determined by applying the formula S-value=HR/(QR)2, thereby obtaining a measurable single value representative of the overall efficiency of the heating and cooling system.

Description

BACKGROUND OF THE INVENTION[0001]1. Technical Field[0002]The present invention relates generally to systems and methods for improving the efficiency of HVAC systems and, more particularly, to a method for improving efficiency in HVAC systems which includes the steps of providing speed and pressure monitoring devices for monitoring and measuring the operational speed and head pressure of the fan or pump of the air or water-based system, providing a fluid flow rate monitoring device which will measure the fluid and flow rate of fluid flowing through the fan or pump, periodically obtaining the operational speed, head pressure, and fluid flow rate from the monitoring devices, determining the S-value of the HVAC system by applying the formula H / Q squared and applying the S-value to optimize operation of the fan or pump by adjusting the operational speed such that the measured S-value approaches the set point S-value representing optimum flow efficiency.[0003]2. Description of the Prior A...

Claims

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Application Information

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IPC IPC(8): F25D17/00
CPCF24F11/0079F24F11/008F24F2011/0043F24F2011/0075Y02B30/746F24F2140/12F24F11/46F24F11/77F24F11/83Y02B30/70F24F11/85F24F11/84
Inventor LIU, MINGSHENG
Owner LIU MINGSHENG
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