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Chapter and Conference Paper
The Optimization of Sensitivity Coefficients for the Virtual in Situ Sensor Calibration in a LiBr–H2O Absorption Refrigeration System
The correct data or information from the building sensing networks plays a vital role in the operation algorithms. The sensor errors usually show a negative effect on the performance of control, diagnosis, and...
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Article
Impacts of HVACR temperature sensor offsets on building energy performance and occupant thermal comfort
Many advanced systems and data analysis methods are introduced into building science to realize the building automation and smart buildings. They are highly dependent on the information and data obtained from ...
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Book
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Chapter
Introduction
With the development of economy and growth of people’s living standards, air-conditioning systems are increasingly popular for the improvement of thermal environment indoors, which results in ever-increasing e...
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Chapter
Modeling and Control Strategies for VAV Systems
In a heating, ventilating, and air-conditioning (HVAC) system, operation of the air-side system has a significant influence on the overall performance of a building energy system. For example, in a worst-case ...
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Chapter
Dynamic Simulations with State-Space Models
In the chapter, characteristics of dynamic thermal response of HVAC components are simulated with corresponding state-space model. The dynamic response characteristics are usually described by two parameters: ...
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Chapter
Virtual Measurement Modeling
Generally, a measurement is only an approximation of the ‘true’ value of a measurand. Because of the involved errors, i.e., systematic errors and random errors, such a measurement should always be accompanied ...
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Chapter
Combined Forecasting Models for Air-Conditioning Load Prediction
Air-conditioning load forecasting is prerequisite for the optimal control and energy-saving operation of HVAC systems. In particular for those systems that use thermal storage technology, air-conditioning load...
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Chapter
Optimal Control of HVAC System Aiming at Energy Conservation
Although the efficiency of individual components has increased considerably in HVAC systems, there still exits much energy waste as much as 30 % of total energy consumption due to various non-optimal operations [
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Chapter
Component Modeling with State-Space Method
A state-space representation, also known as the ‘time-domain approach’, is a mathematical model of a physical system as a set of input, output, and state variables related to first-order differential equations.
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Chapter
Graph-Theory Modeling and Structure-Matrix Analysis
In this chapter, the graph theory is employed for modeling the HVAC components and system. By using the graph-theory models, the direct or indirect relationships among model’s input and output variables are cl...
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Chapter
Control Design Based on State-Space Model
In this chapter, the methodology of MPC in terms of the formulation, model structure, and solving method is first briefly reviewed. Then, Wiener, Hammerstein, and Hammerstein–Weiner structures are introduced, ...
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Chapter
Energy Analysis Model for HVAC System
This chapter firstly deals with energy models of HVAC components including chiller, boiler, pump/fan, cooling tower, and water-to-air surface heat exchanger.
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Chapter and Conference Paper
Oversizing Analysis of HVAC System in Prototypical Commercial Buildings
Oversizing of heating ventilation and air-conditioning equipment becomes an intractable fault once the building system is designed and constructed. It imposes control challenges, impacts the indoor air conditi...
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Chapter and Conference Paper
Key Technology and Research Topics of Heavy Haul and Fast Wagon
Heavy haul and fast speed are the main development direction of railway wagon all over the world, in recent years, railway wagon technologies are flourished developed of which are consisted with low tare weigh...
