Tag Archives: air heating

267-274 A. Aboltins and J. Palabinskis
New types of air heating solar collectors and their use in drying agricultural products
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New types of air heating solar collectors and their use in drying agricultural products

A. Aboltins* and J. Palabinskis

Institute of Agricultural Machinery, Latvia University of Agriculture, Cakstesblvd. ⁵, Jelgava, LV – ³00¹, Latvia;
*Correspondence: aivars.aboltins@inbox.lv

Abstract:

The  aim  of  this  research  was  to  make  new  types  of  air  heating  solar  collection  foragricultural production drying and check their operation. In ²0¹¹ and ²0¹² were obtained twoLatvian Republic Patents for air heating solar collectors. One for an autonomous, compact air-heating solar collector, the other one for a cylindrical crop production drying device with solarcollector  that  can  be  used  for  drying  products.  So  there  are  two  different  types  of  dryingfacilities with solar collectors using sun-warmed air: cylindrical crop production drying device,and  autonomous,  compact  crop  production  drying  facility.  Cylindrical  facility  is  tested  fordrying  ¹⁹.⁵%  wet  wheat.  Autonomous,  compact  crop  production  drying  facility  is  tested  forfresh  carrots  and  apples  ⁵–¹0 mm  slices  drying,  using  ambient  air,  heated  with  the  solarcollector.  For  experimental  results  on  carrot  and  apple  slices  the  layers  of  humidity  andtemperature  changes  in  the  drying  process  are  given.  Grain  temperature  distribution  in  wetwheat layers during drying with heated ambient air depending from sun radiation is given.

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