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Tuesday, April 28, 2020 | History

3 edition of A study of water-to-water heat pump using hydrocarbon and hydrofluorocarbon zeotropic mixtures found in the catalog.

A study of water-to-water heat pump using hydrocarbon and hydrofluorocarbon zeotropic mixtures

A study of water-to-water heat pump using hydrocarbon and hydrofluorocarbon zeotropic mixtures

  • 25 Want to read
  • 34 Currently reading

Published by U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology in Gaithersburg, Md .
Written in English

    Subjects:
  • Heat pumps -- Thermodynamics -- Testing,
  • Refrigerants -- Testing

  • Edition Notes

    Other titlesStudy of water to water heat pump using hydrocarbon and hydrofluorocarbon zeotropic mixtures
    StatementW. Vance Payne, Piotr A. Domanski, Jaroslaw Muller
    SeriesNISTIR -- 6330
    ContributionsDomanski, Piotr, Muller, Jaroslaw, National Institute of Standards and Technology (U.S.)
    The Physical Object
    FormatMicroform
    Paginationv, 35 p.
    Number of Pages35
    ID Numbers
    Open LibraryOL15261043M

    Ashrae Handbook - Fundamentals Robert Parsons heat transfer systems heating loss heat gain temperatures solar ventilation You can write a book review and share your experiences. Other readers will always be interested in your opinion of the books you've read. Whether you've loved the book or.   x Contents Sectoral Heat Pump Utilization Large Heat Pumps for District Heating and Cooling Heat Pump Applications in Industry Heat Sources Air Water Soil and Geothermal Solar Classification of Heat Pumps Water-to-Water Heat Pumps Water-to-Air. Effect of Hydrocarbon Chain Length Surfactants on Particle Size of SWy-1 Montmorillonite Suspensions Silvano Rodrigo VALANDRO, Patrícia Coelho LOMBARDO, Alessandra Lima POLI, Clarice Emi SAKODA, Carla Cristina Schmitt CAVALHEIRO* Instituto de Química de São Carlos, Universidade de São Paulo, Caixa Postal , São Carlos SP, BrazilFile Size: KB. Turner Designs Hydrocarbon Instruments is unparalleled in fluorescence expertise for the measurement of hydrocarbons in water and soil. Our customers enjoy the benefits of our worldwide exposure, product development, and distribution network.


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A study of water-to-water heat pump using hydrocarbon and hydrofluorocarbon zeotropic mixtures Download PDF EPUB FB2

This investigation compared the performance of R22 to the performance of propane (R) and zeotropic mixtures of HFC's and hydrocarbons in a water-to-water heat by: 3. This investigation overviews the comprehensive results of the experimental study pertaining to flammable refrigerant alternatives in water-to-water heat pumps f A Water-to-Water Heat Pump Using Hydrocarbon and Hydrofluorocarbon Zeotropic Mixtures With and Without an Internal Heat Exchanger | NISTAuthor: W Vance Ii Payne, Eric A Silk, Piotr A Domanski.

Get this from a library. A study of a water-to-water heat pump using hydrocarbon and hydrofluorocarbon zeotropic mixtures. [W Vance Payne; Piotr Domanski; Jaroslaw Muller; National Institute of Standards and Technology (U.S.)].

A water-to-water heat pump using hydrocarbon and hydrofluorocarbon zeotropic mixtures with and without an internal heat exchanger. [W Vance Payne; Eric A Silk; Piotr Domanski; National Institute of Standards and Technology (U.S.)].

A water-to-water heat pump using hydrocarbon and hydrofluorocarbon zeotropic mixtures with and without a A water-to-water heat pump using hydrocarbon and hydrofluorocarbon zeotropic mixtures with and without a Effect of lubricant contamination on the performance and reliability of heat pumps charged with Rc [ Evaporation and.

A Study of a Water-to-Water Heat Pump Using Hydrocarbon and Hydrofluorocarbon Zeotropic Mixtures. This investigation compared the performance of R22 to the performance of propane (R) and zeotropic mixtures of HFC's and hydrocarbons in a water-to-water heat pump.

A Study to Water-to-Water Heat Pump Using Hydrocarbon and Hydrofluorocarbon Zeotropic Mixtures,” National Institute of Standards and Technology, Gaithersburg, MD, Report No. Author: Howard Cheung, Shengwei Wang. Schematic of the water-to-water reversible heat pump.

Water temperatures inlet to the condenser and the evaporator are set at 35 and 14 °C respectively, and the water flow rates are set to achieve glide match in both heat by:   Koyama S, Takata N, Fukuda S () An experimental study on heat pump cycle using zeotropic binary refrigerant of HFOze(E) and HFC 10th IEA Heat Pump Conf 1–10 Google Scholar Lai NA () Equations of state for HFOze(E) and their application in the study on refrigeration by: 4.

AbstractThis paper reports an experimental comparison between the use of the refrigerants RA and RA in a heat pump unit designed and developed to work with R Although the use of both refrigerants in new equipments were abolished in EU and US according the new F-Gas Regulation of EU and SNAP, they still being used as options for R12 in old Author: Miguel Vicente Duarte, Luís Carlos Carvalho Pires, Pedro Dinho da Silva, Pedro Dinis Gaspar.

Payne WV, Domanski PA, Muller J. A study of a water-to-water heat pump using hydrocarbon and hydrofluorocarbon zeotropic mixtures. United States Department of Commerce, Technology Administration, National Institute of Standards and Technology, Cited by: The performance of an air to water vapor compression heat pump has been investigated experimentally.

The main purpose of this study was to investigate the possibilities of using Ra as a working fluid to replace R22 for vapor compression heat pumps. Gholamreza Bamorovat Abadi and Kyung Chun Kim, Investigation of organic Rankine cycles with zeotropic mixtures as a working fluid: Advantages and issues, Renewable and Sustainable Energy Reviews, /, 73, (), ().

Scroll compressor modelling for heat pumps using hydrocarbons as refrigerants. Study of a water-to-water heat pump using hydrocarbon and hydrofluorocarbon zeotropic mixtures. May. The solubility of water in hydrocarbons, even at ambient temperatures, can have great practical importance [1].

For instance, should moist gasoline or aviation fuel cool, the water dissolved in it can freeze and block the fuel line or pipe. Thus, prediction of the change solubility of water in hydrocarbons with temperature can be of value.

Generally, hydrocarbon contamination in water is discussed in parts per million (ppm) levels of the hydrocarbon in water. For example, a hydrocarbon level of 30 ppm in water could contain any number of compounds that total this 30 ppm; including compounds found in jet fuels, diesels, lubricating oils, etc.

Concentrations of total and freely dissolved polycyclic aromatic hydrocarbons (PAHs) and dissolved organic carbon (DOC) were measured in water collected during four sampling events at five sites from the River Wyre. The sites are typical of streams draining upland organically rich soils in northwest U.K.

Freely dissolved PAHs were separated from those associated with DOC using. Hydrofluorocarbon refrigerants are not soluble in hydrocarbon oil. Retrofitting refrigeration equipment with hydrofluorocarbons generally entails the use of expensive polyol ester (POE) lubricants.

The invention provides hydrofluorocarbon refrigerant compositions that are soluble in hydrocarbon oil thus allowing for a simpler and less expensive retrofit option to the refrigerant Cited by:   The heats of solution at 25°C for a number of hydrocarbon gases are reported as measured by a calorimetric method.

There is excellent agreement between the standard enthalpy changes of solution measured calorimetrically and those derived from high precision temperature dependent solubility measurements. However the calorimetrically determined standard Cited by:   Cascade system is just similar to the binary- vapour cycle used for the power plants.

In a binary vapour cycle, a condenser for mercury works as a boiler for water as a boiler for water. Similarly, in the cascade system the condenser for low temperature cycle works as an evaporator for the high temperature cycle.

Refrigerant trends in Thailand have shown improvements in increasing energy efficiency and decreasing global-warming potential (GWP), as shown in Figure 3 [7,8], which is related to the hydrofluorocarbon (HFC) phase-down schedule, as shown in Figure 4 [].First- and second-generation refrigerants were composed of natural refrigerants and hydrocarbons (HCs), both.

We use the specific-heat equation for the temperature changes. We use the heat-of-transformation equation for the melting. If a thermodynamic process of a gas gives a rightward transition on a p-V diagram, which of these describes the work done by the gas. Payne, W.V., Silk, E.A., and Domanski, P.A.,“A Water-to-Water Heat Pump Using Hydrocarbon and Hydrofluorocarbon Zeotropic Mixtures With and Without an Internal Heat Exchanger.” NISTIR National Institute of Standards and Technology.

You can write a book review and share your experiences. Other readers will always be interested in your opinion of the books you've read.

Whether you've loved the book or not, if you give your honest and detailed thoughts then people will find new books that are right for them. Sectoral Heat Pump Utilization Large Heat Pumps for District Heating and Cooling Heat Pump Applications in Industry Heat Sources Air Water Soil and Geothermal Solar Classification of Heat Pumps Water-to-Water Heat Pumps Water-to-Air Heat Pumps Refrigeration Systems and Applications, 2nd edition offers a comprehensive treatise that addresses real-life technical and operational problems, enabling the reader to gain an understanding of the fundamental principles and the practical.

Evaporation and Condensation Heat Transfer Performance of Flammable Refrigerants - Free download as PDF File .pdf), Text File .txt) or read online for free. evaporation and condensation. The HCFC refrigerants such as R22 have been used widely as working fluids in refrigeration and air-conditioning systems until now.

These refrigerants, however, should be phased out early in the next century to prevent the depletion of the ozone layer.

In this situation, binary and/or ternary. Hydrocarbons. Measuring for hydrocarbons in water is essential in protecting the environment, saving money from loss product, and safety of personnel who may otherwise be exposed to dangerous hydrocarbons.

Common applications where hydrocarbon monitors are utilized include: cooling tower water, produced water, heat exchangers, boil condensate. Water Quality Indicators: Hydrocarbons Hydrocarbons include a large class of hydrogen- and carbon-containing compounds.

Natural sources of hydrocarbons include petroleum and natural gas deposits as well as the conversion of organic molecules in the environment through chemical or biological processes (Neff et al.

Hydrocarbons are important sources of energy and. MIXTURES OF WATER AND LIQUID HYDROCARBON FUELS Preamble This briefing note sets out the type of questions that a cautious user, financier or plant manufacturer might wish to see answered satisfactorily prior to endorsing the use of an additive mixture intended to blend water in a liquid hydrocarbon fuel either to deal with a contamination.

The performances of the three HFO and HC refrigerant mixtures RA, RA and RA were studied by using REFPROP in a VCRC-based system for which the average COP values for RA, RA and RA were found to be %, %, and %, respectively, less than those of R22, and the compressor discharge pressures of RA and RA were % Author: Muhammad Farooq, Ahsan Hamayoun, Muhammad Naqvi, Saad Nawaz, Muhammad Usman, Salman Raza Naqvi, Muha.

Hydrocarbon - Hydrocarbon - Chemical reactions: As is true for all hydrocarbons, alkanes burn in air to produce carbon dioxide (CO2) and water (H2O) and release heat.

The combustion of 2,2,4-trimethylpentane is expressed by the following chemical equation: The fact that all hydrocarbon combustions are exothermic is responsible for their widespread use as fuels. Hydrocarbons according to below quoted JIS K Most of hydrocarbons are soluble in methanol and easy to measure water content, however, some are difficult to dissolve where we use MI (for general purpose) extracting medium which contains 2-propanol.

The test method can measure the following chemical products:File Size: KB. -Gasoline is a mixture of molecules that includes many hydrocarbons. -"Octane" rating is a misnomer because the substance octane has a terrible "octane rating." -Oxygenated additives like ethanol help lower auto emissions and raise the octane rating.

Hypothetical: A hydrocarbon contamination is observed in the cooling water system for almost a month. Exchangers and pumps utilizing cooling water (CW) were inspected in the process area however, the cooling water supply is already hazy thus the CW return is also hazy already.

The use of biodispersant is being considered to clean up the system. Ground-Source Heat Pumps presents the theory and some of the most recent advances of GSHPs and their implementation in the heating/cooling system of buildings.

The authors explore the thermodynamic cycle with calculation, operation regimes and economic indicators and GHG emissions of a vapor compression heat pump. 2 NACA RM E5ZD24 A literature search was therefore conducted at the NACA Lewis laboratory for data on the solubility of water in pure hydrocarbons and in hydro- oarbon fuels, and an attempt was made to correlate these data in such a way that a reasonably accurate prediction could be made of the solubility of water in any hydrocarbon fuel st any temperature.

@article{osti_, title = {A comparison between ammonia-water and water-lithium bromide solutions in vapor absorption refrigeration systems}, author = {Horuz, I}, abstractNote = {A Vapor Absorption Refrigeration (VAR) System is similar to a Vapor Compression Refrigeration (VCR) System.

In both systems the required refrigeration is provided by refrigerants vaporizing in the. Specific Heat of Water Chapter Exam Instructions. Choose your answers to the questions and click 'Next' to see the next set of questions.

You can skip questions if. heat transfer systems loss heat gain solar wind ventilation temperatures velocity sound dry handbook chapter buildings properties glass transactions indoor radiation You can write a book review and share your experiences.

Other readers will always.JOURNAL OF ENVIRONMENTAL ENGINEERING / MARCH / EQUILIBRIUM AND HEAT OF ADSORPTION FOR W ATER VAPOR AND ACTIVATED CARBON By Shaoying Qi,1 K.

James Hay,2 Mark J. Rood,3 and Mark P. Cal4 ABSTRACT: The Qi-Hay-Rood adsorption isotherm equation is shown to provide an improved description of equilibrium water vapor File Size: 72KB.A refrigerant is a substance or mixture, usually a fluid, used in a heat pump and refrigeration most cycles it undergoes phase transitions from a liquid to a gas and back again.

Many working fluids have been used for such purposes. Fluorocarbons, especially chlorofluorocarbons, became commonplace in the 20th century, but they are being phased out because of their .