Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 77 for “"HVAC systems"”.
-
Directional Airflow for HVAC Systems
… of flow. In the building sector however, HVAC systems are usually equipped with stationary diffusors that can only supply the air either in the form of diffusion or with fixed direction to the room in which they have been installed. In the present thesis, the possibility of adopting …
-
Modeling and control of hydronic building HVAC systems
… fraction of end use energy consumed. Centralized systems such as hydronic networks are becoming increasingly popular to meet those requirements. Energy efficient operation of such systems requires intelligent energy management strategies, which necessitates an understanding of the complex …
-
Dynamic modeling, simulation, and control of transportation HVAC systems
Air Conditioning and Refrigeration (AC&R) systems are ubiquitous in modern society since they perform the key engineering function of transporting thermal energy from one physical location to another. In doing so they are able to change the condition of a defined spatial environment to prescribe a …
-
Model based control optimisation of renewable energy based HVAC Systems.
During the last 10 years solar cooling systems attracted more and more interest not only in the research area but also on a private and commercial level. Several demonstration plants have been installed in different European countries and first companies started to commercialise also small scale …
-
Performance Evaluation of Control Room HVAC Systems Under Accident Conditions
Made available in DSpace on 2017-07-06T18:42:17Z (GMT). No. of bitstreams: 2 Almerico_Franco_MS.pdf: 153813355 bytes, checksum: 97b0597a0b807af26137319d5d544950 (MD5) license.txt: 4813 bytes, checksum: 715c4321821a960fa1a1e91d2ac7ebce (MD5) Previous issue date: 1987
-
Software for fault detection in HVAC systems in commercial buildings
… malfunctioning lighting and comfort conditioning systems. This paper presents analytical methods embodied within useful software tools to quickly identify and evaluate those building system faults that cause large building energy inefficiencies. The technical contributions of this work include …
-
Human Inspection Variability in Infrastructure Asset Management: A Focus on HVAC Systems
… of infrastructure asset management within a systems thinking approach to civil engineering. Skilled inspectors are tasked with the evaluation of various civil infrastructure components, conducting assessments of their conditions, identifying maintenance needs, and determining necessary …
-
Deep Reinforcement Learning-based Control Strategies for Enhancing Energy Management in HVAC Systems
L'abstract è presente nell'allegato / the abstract is in the attachment
-
Dynamic modeling and global optimal operation of multizone variable air volume HVAC systems
… of Heating, Ventilating and Air-Conditioning (HVAC) and building systems. The study on optimal operation as well as modeling of HVAC and building systems is one of the fastest growing fields that contribute to saving energy and improving indoor environment. This thesis is devoted to the …
-
Improving the use of commercial building HVAC systems for electric grid ancillary services
… by providing ancillary services with their HVAC systems. However, use of commercial HVAC systems in this way comes with significant challenges, which relate to interactions between the HVAC system and building operation, electricity markets, and electric grid operators. This thesis addresses …
-
Lessons Learned in Energy Efficiency of Mini-Split HVAC Systems in Affordable Housing
… able to investigate the impact of 3 different HVAC systems energy use by evaluating the energy and cost performance before and after the installation of newer, more efficient systems. We found that although all systems were performing below anticipated standards, the one-stage system …
-
A study on static pressure reset and instability in variable air volume HVAC systems
<p>This project began with testing five different versions of supply duct static pressure reset strategies that fall into two general categories: Proportional plus Integral control loops, and Trim and Respond control strategies. The testing took place from July 2009 through January 2011 at the …
-
Diagnostics in Heating Ventilation and Air Conditioning (HVAC) Systems Using a Rule - Based System
Made available in DSpace on 2017-07-06T18:48:40Z (GMT). No. of bitstreams: 3 Huffer_Jason_E_MS.pdf: 108923499 bytes, checksum: 7598e8c1dda5e1140205024a946c302c (MD5) Huffer_Jason_E_MS_ABS.pdf: 488205 bytes, checksum: 0aa43d14872ee7d9e46c91b8c5d20bee (MD5) license.txt: 4813 bytes, checksum: …
-
Air - for Health and Comfort, An Analysis of HVAC Systems' Performance in Theory and Practice
… is to analyze how different ventilation systems perform in practice when it comes to supplying and exhausting designed air flow in different outdoor and indoor conditions. The other part is to analyze the design criterias and the energy use of a variable air volume system based on …
-
Analysis and characterization of ancillary service demand response strategies for variable air volume HVAC systems
… High resolution power consumption and HVAC performance data measured in a real building was used to identify real-world operational qualities of VAV systems to be considered by building researchers and building practitioners. This includes the relative magnitude of building power loads, …
-
Detection and diagnosis of faults and energy monitoring of HVAC systems with least-intrusive power analysis
… in heating, ventilating, and air conditioning (HVAC) systems, faults always lead to inefficient energy consumption, undesirable indoor air conditions, and even damage to the mechanical components. Continuous monitoring of the system and analysis of faults and their major effects are therefore …
-
A standard simulation testbed for the evaluation of control algorithms & strategies related to variable air volume HVAC systems
… external building loads, the buildings secondary systems, and the plant or primary energy source. The purpose of the model is to provide a standard testbed for the evaluation of control algorithms and strategies related to variable air volume HVAC systems. This work was conducted in collaboration …
Page 1 of 4