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Heat pump-floor heating system control method considering user comfort and building heat storage

A technology of user comfort and control method, applied in the field of heat pump-floor heating system control, can solve the problem of insufficient mining and utilization of building heat storage characteristics, lack of impact mechanism of building energy system economic operation, and inability to consider equipment energy supply characteristics and building at the same time Heat storage characteristics and other issues, to achieve the effect of easy dynamic self-adjustment

Active Publication Date: 2019-12-06
TIANJIN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007]1) The energy supply characteristics of equipment and the heat storage characteristics of buildings are often not considered at the same time, and the model is not fine enough, which affects the practicability of related methods;
[0008]2) Most of the HVAC start / stop and energy supply equipment output are used as control variables, which cannot meet the needs of users' self-adjustment, and indoor temperature changes caused by cooling / heating changes In contrast, it is not easy to be perceived by users
[0009]3) The comfort of users is considered more comprehensively, but the excavation and utilization of building heat storage characteristics are not enough. Research on the Mechanism of Influence

Method used

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  • Heat pump-floor heating system control method considering user comfort and building heat storage
  • Heat pump-floor heating system control method considering user comfort and building heat storage
  • Heat pump-floor heating system control method considering user comfort and building heat storage

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Embodiment 1

[0083] In order to establish the mathematical relationship between the indoor temperature and the power consumption of the HPFHS, the building energy system model constructed by the present invention includes two parts: the HPFHS model and the building heat load model. The former is used to establish the mathematical relationship between the power consumption and the heating capacity of the HPFHS, and the latter is used to establish the mathematical relationship between the indoor temperature and the building heat load, and the relationship is established through the thermal power balance constraint.

[0084] HPFHS is mainly composed of ASHP, buffer water tank, Low Temperature HotWater Floor Radiant Heating System (FHS), heat pump circulating water pump, heat network circulating water pump and hot water pipeline, such as figure 1 shown. Electrical equipment includes ASHP, heat pump circulating water pump and heat network circulating water pump.

[0085] ASHP electrical equipm...

Embodiment 2

[0169] In the present invention, a single-family residential building on a typical day in northern winter is taken as an example, and the outdoor temperature and light intensity predicted by the weather station are respectively as follows Image 6 , Figure 7 shown. The time-of-use electricity price adopts the time-of-use electricity price for residents in Shaanxi Province, such as Figure 8 shown. The calculation parameters of PMV index are shown in Table 1. The main parameters of the building energy system model are shown in Table 2. The thermal insulation structure form of rural residential buildings in severe cold and cold areas in "Energy-saving Design Standards for Rural Residential Buildings_GBT 50824-2013" is used as the building envelope structure of this example. The building envelope structure materials and their thermodynamic parameters are shown in Table 3. In order to fully study the thermal storage characteristics of buildings, ignoring the difference betwee...

Embodiment 3

[0205] The present invention proposes a user-oriented active and friendly control strategy, which can be optimized based on the room temperature setting value, considers the user's thermal comfort, and makes full use of the heat storage characteristics of the building. The proportion of output during the electricity price period can effectively reduce its operating costs, and it also has certain reference significance for other types of building heating systems.

[0206] The present invention will be described in detail below with reference to the accompanying drawings. The rolling optimization control strategy steps of the present invention are as follows: Figure 17 shown, mainly including:

[0207] 1) Model the building energy system, including HPFHS model and building heat load model, to determine the mathematical relationship between HPFHS power consumption Ps and indoor temperature Tz;

[0208] 2) Construct a rolling optimization control architecture based on room temp...

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Abstract

The invention discloses a heat pump-floor heating system control method considering user comfort and building heat storage. The method comprises: constructing an HPFHS model and a building heat load model for a building energy system; constructing a room temperature rolling optimization control architecture composed of a physical layer, a user layer and a control layer; selecting, by the rolling optimization control of the control layer, the minimum sum of the system operation cost and the temperature penalty in the prediction time domain as a system optimization scheduling target; on the premise that the control layer meets the constraint based on the constructed building energy system model, solving the optimal scheduling model to determine the optimal Tset; uploading the optimal Tset tothe user layer by the control layer and finally issuing the optimal Tset to the physical layer to be executed; after the physical layer executes the Tset, carrying out control layer data updating; and repeatedly rolling to obtain all moments Tset and corresponding physical layer execution results. According to the invention, the room temperature set value is used as a control variable, which is convenient for a user to dynamically and autonomously adjust and is more friendly to the user.

Description

technical field [0001] The invention relates to the technical field of economical operation of a building energy system, in particular to a heat pump-floor heating system control method considering user comfort and building heat storage. Background technique [0002] With the acceleration of global urbanization and the continuous improvement of people's living standards, energy demand is growing rapidly. Among them, building energy is one of the largest energy consumption areas, accounting for more than one-third of global final energy consumption [1] . Taking the European Union as an example, in 2017, its residential buildings accounted for about 27% of the total final energy consumption, of which about 64% was used for heating [2] . my country is also facing the same problem. According to the statistics of "China Building Energy Consumption Research Report (2018)", in 2016, my country's building energy consumption accounted for about 20.6% of the country's total energy ...

Claims

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Application Information

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IPC IPC(8): G06F17/50G06Q50/08F24D19/10F24D11/02
CPCG06Q50/08F24D19/10F24D11/0207
Inventor 穆云飞杜丽佳贾宏杰霍现旭李树鹏李国栋戚艳
Owner TIANJIN UNIV
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