Last edited by Muktilar
Tuesday, July 14, 2020 | History

2 edition of Solar energy for wood drying using direct or indirect collection with supplemental heating found in the catalog.

Solar energy for wood drying using direct or indirect collection with supplemental heating

John L Tschernitz

Solar energy for wood drying using direct or indirect collection with supplemental heating

a computer analysis

by John L Tschernitz

  • 285 Want to read
  • 14 Currently reading

Published by U.S. Dept. of Agriculture, Forest Service, Forest Products Laboratory in Madison, WI .
Written in English

    Subjects:
  • Lumber -- Drying -- Data processing,
  • Solar energy

  • Edition Notes

    StatementJ.L. Tschernitz
    SeriesResearch paper FPL -- RP-477
    ContributionsForest Products Laboratory (U.S.)
    The Physical Object
    Pagination81 p. :
    Number of Pages81
    ID Numbers
    Open LibraryOL13609420M

    Passive solar design takes advantage of a building’s site, climate, and materials to minimize energy use. A well-designed passive solar home first reduces heating and cooling loads through energy-efficiency strategies and then meets those reduced loads in whole or part with solar energy. Because of the small heating loads of modern homes it is very important to avoid oversizing south-facing. Direct solar dryer with photovoltaic cell [19] Indirect solar drying systems have a separate drying unit and a solar collector. They are usually consisted from many main components; solar.

    Solar water heating (SWH) is the conversion of sunlight into heat for water heating using a solar thermal collector.A variety of configurations is available at varying cost to provide solutions in different climates and latitudes. SWHs are widely used for residential and some industrial applications. Solar radiation in the form of solar thermal energy, is an alternative source of energy for drying especially to dry fruits, vegetables, agricultural grains and other kinds of material, such as wood.

    So, 1) really evaluate whether a hot tub is worth all this energy, cost, and carbon before you buy, 2) look for the most efficient one you can find -- paying extra for a well insulated and energy efficient tub will save you money and reduce carbon emissions, 3) have a very good cover and use it, 4) use one of the solar or wood heating schemes. There are direct and indirect types of solar dryers. The direct drying systems expose the product to the direct sunlight. The key processes here are heat transfer from the heating source to the target product and mass transfer of moisture from the product to the air. In these systems, the drying process is sometimes assisted by air flow, which.


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Solar energy for wood drying using direct or indirect collection with supplemental heating by John L Tschernitz Download PDF EPUB FB2

Solar Energy for Wood Drying Using Direct or Indirect Collection with Supplemental Heating A Computer Analysis J. Tscherni tz, Chemi cal Engineer Forest Products Labor atory, Madison, WI Introduction Conventional wood drying in heated kilns consumes l arge quantities of energy, and in the past decade t he wor ld has.

Solar energy for wood drying using direct or indirect collection with supplemental heating. Madison, WI: U.S. Dept. of Agriculture, Forest Service, Forest Products Laboratory, (OCoLC) Material Type: Government publication, National government publication: Document Type: Book: All Authors / Contributors.

Solar energy for wood drying using direct or indirect collection with supplemental heating (OCoLC) Material Type: Document, Government publication, National government publication, Internet resource: Document Type: Internet Resource, Computer File: All Authors / Contributors: John L Tschernitz; Forest Products Laboratory (U.S.).

Solar energy for wood drying using direct of indirect collection with supplemental heating: a computer analysis. by JL Tschernitz.

Format: Print Book Publication year: Held by WUR Library. Check Availability. Read Alternate Summary/Abstract. null. Close. Performamce of a solar/wood energy kiln in tropical latitudes.

Forest Products J. 39(1). Skaar, C. Energy requirements for drying. Tschernitz, J.L. Solar energy for wood drying using direct or indir~t collection with supplemental heating.

US Forest Products Lab. Research Paper FPL-RPpp Vital, B.R. ().Cited by: 7. In solar drying, solar energy is used as either the sole heating source or a supplemental source, and the air flow can be generated by either forced or natural convection.

The heating procedure could involve the passage of the preheated air through the product or by directly exposing the product to solar radiation, or a combination of both. Solar radiation, in the form of solar thermal energy, is an alternative source of energy for drying especially to dry fruits, vegetables, agricultural grains and other kinds of material, as wood, etc.

Tschernitz JL () Solar energy for wood drying using direct or indirect collection with supplemental heating. A computer analysis. United States Department of Agriculture.

Forest Service Research Paper FPL-RP An evaporative cooler (also swamp cooler, swamp box, desert cooler and wet air cooler) is a device that cools air through the evaporation of water. Evaporative cooling differs from typical air conditioning systems, which use vapor-compression or absorption refrigeration cycles.

Evaporative cooling uses the fact that water will absorb a relatively large amount of heat in order to evaporate. Solar energy for wood drying using direct or indirect collection with supplemental heating: a computer analysis / By John L. Tschernitz and Forest Products Laboratory (U.S.) Abstract "July "--T.p.

buted to depository libraries in. Tschernitz, J. L.: Solar energy for wood drying using direct or indirect collection with supplemental heating. US Forest Products Laboratory, Research paper No.

FPL-RP, 91pp Vital, B. R.: Use of solar energy for drying wood. The economics of drying timber was assessed for a green-house type solar kiln along with the conventional drying techniques.

Both the operating and capital costs of the solar kiln were much lower than those of the steam kiln. Compared to air drying the solar drying was cheaper and cost less than one-half of the steam kilning. The pay back period was about one year for the solar kiln against A.

EGGERS-LURA, in Solar Energy in Developing Countries, Research and Development. In the field of solar drying there is a considerable scope to investigate total systems including solar energy collection, storage, and drying chamber heat and mass transfer conditions.

Modern solar energy technologies harness the heat generated from the sun to power residential and industrial heating and cooling systems through the use of photovoltaic, or PV, panels.

Solar dryers are devices that use solar energy to dry substances, especially food. There are two general types of solar dryers: Direct and indirect. DIRECT Direct solar dryers expose the substance to be dehydrated to direct sunlight.

They have a black absorbing surface which collects the light and converts it to heat; the substance to be dried. Considering these facts, the design of a dryer for the treatment of grains is proposed, with the intention of obtaining control on the kinetics of drying using direct or indirect solar heating and electrical energy storage from a solar photovoltaic system within established air velocities and temperatures ranges.

In order to highlight the energy requirements of solar drying system, this chapter attempts to show extensive energy analysis of direct/indirect solar dryers. The CO 2 discharge per year, embodied energy, energy payback time, carbon mitigation, and carbon credit have all been considered.

The embodied energy of greenhouse dryers in passive mode. In passive solar building design, windows, walls, and floors are made to collect, store, reflect, and distribute solar energy in the form of heat in the winter and reject solar heat in the summer. This is called passive solar design because, unlike active solar heating systems, it does not involve the use of mechanical and electrical devices.

The key to designing a passive solar building is. In this work, the Nerium Oleander was dried at its prescribed drying temperature (50± º C) in indirect solar dryer (ISD) using phase change material (PCM) as energy storage medium.

12 kg of. Solar energy can be used for drying applications by open sun, direct solar and indirect solar drying methods.

Hybrid photovoltaic/Thermal (PV/T) solar dryer can be used for drying applications using. Various Solar Air Heating and Solar Dryer solutions.

Over the years we have worked hard on the research and development to provide you with customized Solar Dryers and Solar Air Heating systems for various applications such as drying of fruits and vegetables such as onions, tomatoes, potatoes, mango, amla, ayurvedic herbs, candy bars etc.Solar food drying is a form of solar food processing which uses airflow and solar energy to dehydrate food for consumption and storage.

Solar food dryers can be constructed much like solar cookers, except that instead of sealing in the hot air, a flow of air into and out of the box must be maintained in order to move the moisture evaporated from the food out to the surrounding outside air.which solar radiation is used, i.e.

drying under direct sunlight to preserve food or non-food products since ancient times. Solar drying does not require man produced energy, uses renewable energy and applicable in any part of the world. Nevertheless, in order to increase the efficiency of material drying using solar radiation, proper.