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Author : Carolina de Sousa Fraga
Publisher :
ISBN 13 :
Total Pages : 143 pages
Book Rating : 4.:/5 (14 download)
Download or read book Heat Pump Systems for Multifamily Buildings written by Carolina de Sousa Fraga and published by . This book was released on 2017 with total page 143 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (14 download)
Download or read book Split HPWHs as an Efficient Solution for Multifamily Buildings with In-Unit Water Heaters: Preprint written by and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A quarter of all housing units in the country are found in multifamily buildings but few efficiency innovations have been made to improve electric water heating systems in this building type. Domestic hot water in multifamily buildings can either be provided by a large central water heater or smaller in-unit water heaters. Integrated heat pump water heaters that are installed in single family homes are often a poor fit for individual multifamily units since the water heaters are often located in small internal closets. This confined space can limit the air flow to the heat pump and the cold exhaust air can cause discomfort and reduced efficiency. Split CO2 HPWHs separate the tank from the heat pump, which allows for installation location flexibility. Further, CO2 heat pumps can operate under colder ambient conditions, making them a better fit for multifamily units across a wide range of climate regions. As part of a larger project to characterize split HPWH performance, we evaluated the feasibility of installing an additional, parallel tank that could provide hot water to a second housing unit using a single CO2 heat pump. This approach would reduce the first costs of these more expensive units. Based on the high draw volume that we imposed on both tanks, the same heat pump may be able to support more tanks, depending on hot water usage. This paper will describe the split CO2 HPWH technology, how the two-tank system was controlled, and results from our laboratory evaluation.
Author :
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (14 download)
Download or read book Split HPWHs as an Efficient Solution for Multifamily Buildings with In-Unit Water Heaters written by and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A quarter of all housing units in the United States are found in multifamily buildings, but few efficiency innovations have been made to improve electric water heating systems in this building type. Domestic hot water in multifamily buildings can either be provided by a large central water heater or smaller in-unit water heaters. Integrated heat pump water heaters that are installed in single-family homes are often a poor fit for individual multifamily units because the water heaters are often located in small internal closets. This confined space can limit the airflow to the heat pump, and the cold exhaust air can cause discomfort and reduced efficiency. Split CO2 HPWHs separate the tank from the heat pump, which allows for installation location flexibility. Further, CO2 heat pumps can operate under colder ambient conditions, making them a better fit for multifamily units across a wide range of climate regions. As part of a larger project to characterize split HPWH performance, we evaluated the feasibility of installing an additional, parallel tank that could provide hot water to a second housing unit using a single CO2 heat pump. This approach would reduce the first costs of these more expensive units. Based on the high draw volume that we imposed on both tanks, the same heat pump may be able to support more tanks, depending on hot water usage. This paper will describe the split CO2 HPWH technology, how the two-tank system was controlled, and results from our laboratory evaluation.
Author : Jordan Dentz
Publisher :
ISBN 13 :
Total Pages : 35 pages
Book Rating : 4.:/5 (95 download)
Download or read book Mini-split Heat Pump Multifamily Retrofit Feasibility Study written by Jordan Dentz and published by . This book was released on 2014 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mini-split heat pumps can provide space heating and cooling in many climates and are relatively affordable. These and other features make them potentially suitable for retrofitting into multifamily buildings in cold climates to replace electric resistance heating or other outmoded heating systems. This report investigates the suitability of mini-split heat pumps for multifamily retrofits. Various technical and regulatory barriers are discussed and modeling was performed to compare long-term costs of substituting mini-splits for a variety of other heating and cooling options. A number of utility programs have retrofit mini-splits in both single family and multifamily residences. Two such multifamily programs are discussed in detail.
Author : Y. H. Venus Lun
Publisher : Springer Nature
ISBN 13 : 3030313875
Total Pages : 137 pages
Book Rating : 4.0/5 (33 download)
Download or read book Heat Pumps for Sustainable Heating and Cooling written by Y. H. Venus Lun and published by Springer Nature. This book was released on 2019-11-13 with total page 137 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights the significance of using sustainable energy to prevent the deterioration of our planet using heat pumps. Energy sustainability can be achieved through improved energy efficiency. In this regard, heat pumps offer an energy-efficient alternative for heating and cooling. To drive the adoption of heat pumps as a key component of sustainable buildings, the authors focus on examining sustainable practices in heat pump operations and innovative system design. In view of the growing desire to use sustainable energy to meet heating and cooling demands and improve indoor air quality, this book offers a valuable reference guide to the available options in HVAC (heating, ventilation, and air-conditioning) system design. To begin with, the authors define sustainable energy and discuss the trend of “thinking green” in building design. They then discuss sustainable practices and heat pump applications in mapping out HVAC systems. In turn, they examine the use of green operations to promote sustainable practices and, in order to highlight the importance of innovative design, discuss the configuration options and precision control aspects. In closing, the authors illustrate innovative sustainable design on the basis of several energy-efficient cases. The book’s main goal is to drive the adoption of sustainable energy solutions. Heat pumps, it argues, represent the most efficient system for meeting commercial/recreational/residential heating and cooling demands. The book not only examines industrial practices in heat pump application, but also discusses advanced heat pump technologies and innovative heat pump designs.
Author : Canada Mortgage and Housing Corporation. External Research Program
Publisher :
ISBN 13 :
Total Pages : 30 pages
Book Rating : 4.:/5 (519 download)
Download or read book Investigation of a Ground-source Heat Pump Retrofit to an Electrically Heated Multi-family Building : Final Report written by Canada Mortgage and Housing Corporation. External Research Program and published by . This book was released on 2002 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the 1960s and 1970s, electric baseboard heating systems were a common space heating approach in multi-unit residential buildings due to low installation costs, minimal use of interior space and the relatively low price of electricity. As a result, approximately 50% of apartment buildings in Canada have electric baseboard heating. However, rapidly increasing costs of electricity, concerns over environmental damage associated with conventional generating stations and the very age of most electric baseboards in apartment buildings will necessitate the development of alternative space heating strategies. This is a report of research to investigate the technical potential and economic benefits of retrofitting electrically heated apartment buildings with ground-source heat pumps. The report presents results of a literature and web search and review of available components and equipment suitable for the application, and analyses the most promising combination using an example building complex in the Greater Toronto area. Both the cases of no benefit and full benefit for central air conditioning are considered. Comparisons are drawn with retrofitting natural gas heating systems under the same circumstances. Conclusions and recommendations for new component development are identified and the economic results are as attractive under some circumstances as natural gas heating system retrofits.
Author : Jean-Christophe Hadorn
Publisher : John Wiley & Sons
ISBN 13 : 3433604851
Total Pages : 274 pages
Book Rating : 4.4/5 (336 download)
Download or read book Solar and Heat Pump Systems for Residential Buildings written by Jean-Christophe Hadorn and published by John Wiley & Sons. This book was released on 2015-06-30 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: Die Kombination von Wärmepumpen und Solarthermie ist eine relativ neue Entwicklung und hat großes Potenzial, die Energieeffizienz von Heizungs- und Warmwasseranlagen wesentlich zu erhöhen. Damit kann die Gesamtenergiebilanz eines Gebäudes entscheidend verbessert werden. Das Buch ist ein Leitfaden für Entwurf, Simulation, Monitoring und Evaluation von Systemen aus Wärmepumpen und Solarthermie. Verschiedene Systeme werden verglichen und hinsichtlich ihrer Leistungsfähigkeit analysiert. Ergebnisse von Simulationen und Labortests werden ebenso beschrieben wie die Erfahrungen aus gebauten Projekten. Somit ermöglicht es dem Leser, entsprechend der jeweiligen Randbedingungen seines Projektes das effizienteste System zu entwerfen. Dieses Buch ist das erste, das sich eingehend mit dieser Kombination von Komponenten befasst und präsentiert den aktuellen Stand der Technik in diesem Bereich. Es basiert auf einem vierjährigen gemeinsamen Forschungsprojekt zweier Programme der Internationalen Energieagentur: 'Solar Heating and Cooling' (SHC) und 'Heat Pump'. Mehr als 50 renommierte Experten aus 13 Ländern waren an dem Projekt beteiligt.
Author :
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (14 download)
Download or read book Mini-Split Heat Pumps Multifamily Retrofit Feasibility Study written by and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mini-split heat pumps can provide space heating and cooling in many climates and are relatively affordable. These and other features make them potentially suitable for retrofitting into multifamily buildings in cold climates to replace electric resistance heating or other outmoded heating systems. This report investigates the suitability of mini-split heat pumps for multifamily retrofits. Varioustechnical and regulatory barriers are discussed and modeling was performed to compare long-term costs of substituting mini-splits for a variety of other heating and cooling options. A number of utility programs have retrofit mini-splits in both single family and multifamily residences. Two such multifamily programs are discussed in detail.
Author : Joshua Bird
Publisher :
ISBN 13 : 9781523139927
Total Pages : 66 pages
Book Rating : 4.1/5 (399 download)
Download or read book Heat Pump Installations for Multi-unit Residential Buildings written by Joshua Bird and published by . This book was released on 2021 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Armin Rudd
Publisher :
ISBN 13 : 9780975512760
Total Pages : 68 pages
Book Rating : 4.5/5 (127 download)
Download or read book Ventilation Guide written by Armin Rudd and published by . This book was released on 2006-01-01 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : John Joseph Neville
Publisher :
ISBN 13 :
Total Pages : 418 pages
Book Rating : 4.:/5 (89 download)
Download or read book The Economic and Societal Considerations in the Selection of a Space and Water Heating and Air Conditioning System for a Multifamily Or Commercial Building written by John Joseph Neville and published by . This book was released on 1991 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Building America Case Study written by and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Although heat pump water heaters (HPWHs) have gained significant attention in recent years as a high efficiency electric water heating solution for single family homes, central HPWHs for commercial or multi-family applications are not as well documented in terms of measured performance and cost effectiveness. To evaluate this technology, the Alliance for Residential Building Innovation team monitored the performance of a 10.5 ton central HPWH installed on a student apartment building at the West Village Zero Net Energy Community in Davis, California. Monitoring data collected over a 16-month period were then used to validate a TRNSYS simulation model. The TRNSYS model was then used to project performance in different climates using local electric rates. Results of the study indicate that after some initial commissioning issues, the HPWH operated reliably with an annual average efficiency of 2.12 (Coefficient of Performance). The observed efficiency was lower than the unit's rated efficiency, primarily due to the fact that the system rarely operated under steady-state conditions. Changes in the system configuration, storage tank sizing, and control settings would likely improve the observed field efficiency. Modeling results suggest significant energy savings relative to electric storage water heating systems (typical annual efficiencies around 0.90) providing for typical simple paybacks of six to ten years without any incentives. The economics versus gas water heating are currently much more challenging given the current low natural gas prices in much of the country. Increased market size for this technology would benefit cost effectiveness and spur greater technology innovation.
Author : Institute of Real Estate Management
Publisher :
ISBN 13 :
Total Pages : 40 pages
Book Rating : 4.0/5 ( download)
Download or read book No-cost Low-cost Energy Conservation Measures for Multifamily Housing written by Institute of Real Estate Management and published by . This book was released on 1981 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Thibault Péan
Publisher : Springer Nature
ISBN 13 : 3030634299
Total Pages : 213 pages
Book Rating : 4.0/5 (36 download)
Download or read book Heat Pump Controls to Exploit the Energy Flexibility of Building Thermal Loads written by Thibault Péan and published by Springer Nature. This book was released on 2021-01-04 with total page 213 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes different control strategies adapted to heat pumps, at the purpose of increasing energy flexibility in buildings. It reports on the development of both simple rule-based controls (RBC) and advanced model predictive controls (MPC). These are tested and compared in both simulation and experimental setups. The book analyzes in detail all the different steps, including the development and tuning of the controllers, their testing in experimental settings and simulation studies. Bridging between advanced control systems theory concepts and practical needs, and discussing the advantages and main challenges of MPC and RBC controllers in terms of efficiency of heat pump operation, electricity prices, emission values, and users’ comfort, this book offers an in-depth evaluation of innovative control strategies applied to energy demand management in buildings.
Author : David Borge-Diez
Publisher : Springer Nature
ISBN 13 : 3031245245
Total Pages : 326 pages
Book Rating : 4.0/5 (312 download)
Download or read book Geothermal Heat Pump Systems written by David Borge-Diez and published by Springer Nature. This book was released on 2023-03-21 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents an overview of geothermal heating systems using ground source heat pumps in different countries. It evaluates the emissions and energy costs generated by the operation of low enthalpy geothermal systems, with heat pumps fed by different energy sources, and assesses, from an international point of view, those policies whose aim is a sustainable, low-carbon economy. The use of low-impact energy sources is gradually growing with the aim of reducing greenhouse gases emission and air pollution. The alternatives offered by geothermal systems are one of the key solutions for a future renewable development, enabling the electrification of heating systems and the use of biofuels. The book will be of interest to energy professionals and researchers.
Author : Harry J. Sauer (Jr.)
Publisher : Wiley-Interscience
ISBN 13 :
Total Pages : 744 pages
Book Rating : 4.3/5 (91 download)
Download or read book Heat Pump Systems written by Harry J. Sauer (Jr.) and published by Wiley-Interscience. This book was released on 1983-08-30 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive introduction to the fundamentals, performance, design, cost, and selection of heat pumps. Utilizes life-cycle costing to determine operating and owning costs. Examines load and energy estimating, pump design, and more. Reviews the historical evolution of heat pump technology and demonstrates the design pitfalls of early models.
Author : International Energy Agency
Publisher :
ISBN 13 :
Total Pages : 208 pages
Book Rating : 4.:/5 (41 download)
Download or read book Heat Pump Systems written by International Energy Agency and published by . This book was released on 1982 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
