Centralized heating method and system

Abstract

The invention discloses a centralized heating method and system. The method comprises the steps that secondary side water supply temperature data and return water temperature data of users of the centralized heating system are obtained firstly; according to the secondary side water supply temperature data and return water temperature data of the users, response time of the users is determined; comprehensive response time is determined according to the response time of the users; and finally the heating sequence of the users is determined according to the response time of the users and the comprehensive response time. The heating sequence of the users is determined according to the response time of the users, the number of heating users in the same time period is reasonably set, accordingly, centralized heating pipeline operation pressure is reduced, improvement investment is reduced, and the operation cost is reduced.

Description

technical field [0001] The invention relates to the technical field of central heating, in particular to a central heating method and system. Background technique [0002] With the promotion and application of energy-saving technologies, the intensity of heating energy consumption continues to decline, but the total heating energy consumption is also increasing year by year due to the increase in heating area in northern cities and towns. As the heating scale increases, the operating flow of the heating pipe network increases year by year, resulting in an increase in the energy consumption of the heating station. [0003] In the process of heating scale development, the pipe network flow is getting bigger and bigger, the most unfavorable loop is getting longer and longer, and the pressure drop of the pipe network is getting bigger and bigger. In order to meet the needs of increasing central heating load year by year, under the condition that the transformation of the heatin...

AI Technical Summary

Problems solved by technology

However, the method of replacing the heat source circulating water pump has the following disadvantages: 1. The pressure of the water supply pipeline increases, causing problems for the pressure bearing of the pipeline and equipment, which can easily lead to rupture of old equipment and pipe networks, bringing huge economic losses and affecting the supply. heat effect

Second, the pressure difference between the supply and return water of the front-end users close to the heat source increases, which not only increases the throttling loss, but also further deteriorates the hydraulic imbalance of the system, resulting in the heating effect of the front heating and the cooling

3. The investment of replacing the main heat source water pump is high. As the power of the water pump increases, the power supply capacity will also increase accordingly.

Four, high energy consumption

However, the method of setting the relay pumping station has the following disadvantages: First, the setting of the relay pumping station needs to solve the site and power supply problems, which increases the investment

2. The relay pump station is far away from the heat source, and special personnel are required for maintenance and management, which increases operating costs

Third, the relay pump and the heat source circulating water pump form a series relationship, and the pressure conditions affect each other, which brings certain difficulties to the operation adjustment

However, the method of installing a secondary booster pump at the user still has the following disadvantages: First, each user installs a circulating water pump, and the initial investment is relatively high

Second, the pumps work in parallel at the same time, which will cause dynamic hydraulic balance problems

3. The head of the secondary booster pump of the user far away from the heat source is too large, resulting in excessive power of the end user pump

Images