Browse Prior Art Database

Boiler Management

IP.com Disclosure Number: IPCOM000084371D
Original Publication Date: 1975-Nov-01
Included in the Prior Art Database: 2005-Mar-02
Document File: 2 page(s) / 13K

Publishing Venue

IBM

Related People

Licausi, N: AUTHOR [+3]

Abstract

A method for automatically controlling a multiboiler heating system is described. A basic algorithm provides a tool to help a user maintain the total required load by adjusting individual boiler loads, so that the most economical system configuration is reached.

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Boiler Management

A method for automatically controlling a multiboiler heating system is described. A basic algorithm provides a tool to help a user maintain the total required load by adjusting individual boiler loads, so that the most economical system configuration is reached.

A central processor is connected to monitor operation and control fuel application to various boilers, such as might be utilized within a facility. The algorithm determines the loads at which boilers should operate so as to produce the most efficient boiler operation and to reduce fuel cost.

The boiler load optimization algorithm requires input data to define required loads, boiler status and projected loads. Essentially six major input data areas are required including: (1) identification of projected percent load increase/decrease for specific time periods, (2) output loads for boilers, (3) load versus efficiency for each boiler, (4) status of all boilers in the system being evaluated, (5) cost of fuel for boilers on and for those on standby, and (6) cost of operating a boiler. Based on the above input data, the following steps define the algorithm to optimize boiler loads: Determine loads where minimum cost occurs on each boiler (cost vs load values are recalculated whenever any of the variables in the equation below are changed). Cost = ((fuel cost per BTU/efficiency) X BTU Load) + maintenance to run boiler + cost for standby boiler(s) Determine load required from complete boiler system and determine the total minimum cost loads of boilers on. Compare total loads above and increment or decrement loads on boilers whose minimum cost loads increase at the smallest rate until both loads are within a user defined tolerance.

The projection algorithm requires the following input data so that it can project upcoming boiler loads. Essentially six major input data areas are required including: (1) smoothing constants for historical, present day and comb...