Theoretical Study of an Intermittent Water-Ammonia Absorption Solar System for Small Power Ice Production

João M. Garcia and Armando Rosa
Additional contact information
João M. Garcia: Mechanic Engineering Department, Escola Superior de Tecnologia de Setúbal/IPS Campus do IPS, Estefanilha, 2760-761 Setúbal, Portugal
Armando Rosa: Escola Superior de Tecnologia de Setúbal/IPS, IPS Campus, Estefanilha, 2760-761 Setúbal, Portugal

Sustainability, 2019, vol. 11, issue 12, 1-18

Abstract: This article is dedicated to the design, calculation and dimensioning of a small powered refrigeration system (132W) which produces ice bars (freezing) using solar thermal power, and resorts to an intermittent cycle absorption circuit with a water-ammonia mixture (H 2 O-NH 3 ). The aim of this equipment is to minimize problems faced in places where there is no electric network to supply traditional refrigeration systems which preserve perishable products produced or stocked there, as well as drugs (vaccines), namely for specific regions of developing countries. The system developed can be divided into two parts. The intermittent cycle absorption refrigeration system uses a binary water-ammonia solution (H 2 O-NH 3 ), where water is the absorber and the ammonia is the coolant and the thermal solar system. This is made up of CPC flat plate thermal collectors or vacuum tubes in which solar energy heats the water that circulates in the primary circuit. In the absorption circulation system, circulation occurs in a natural way due to the fluids affinity, and the temperature and pressure internal variations. This article shows the assumptions underlying the conception, calculation and dimensioning of the system’s construction.

Keywords: ice production; refrigeration systems; intermittent absorption cycle; solar thermal energy (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

Downloads: (external link)
https://www.mdpi.com/2071-1050/11/12/3346/pdf (application/pdf)
https://www.mdpi.com/2071-1050/11/12/3346/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:11:y:2019:i:12:p:3346-:d:240508

Access Statistics for this article

Sustainability is currently edited by Ms. Alexandra Wu

More articles in Sustainability from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().