Makara Journal of Technology
Vol. 17, No. 2

Characteristics of Vacuum Freeze Drying with Utilization of Internal Cooling and Condenser Waste Heat for Sublimation

Alhamid, Muhammad Idrus (Unknown)
Yusuf, Nasruddin (Unknown)
Mahlia, Indra Teuku Meurah (Unknown)
Kosasih, Engkos Ahmad (Unknown)
Yulianto, Muhamad (Unknown)
Ricardi, Rio (Unknown)

Article Info

Publish Date
02 Aug 2013

Abstract

Vacuum freeze drying is an excellent drying method, but it is very energy-intensive because a relatively long drying time is required. This research investigates the utilization of condenser waste heat for sublimation as a way of accelerating the drying rate. In addition, it also investigates the effect of internal cooling combined with vacuum cooling in the pressure reduction process. Jelly fish tentacles were used as the specimen, with different configurations for condenser heat waste and internal cooling valve opening. The results show that heating with condenser heat waste can accelerate the drying rate up to 0.0035 kg/m2.s. In addition, pre-freezing by internal cooling prevents evaporation until the mass of the specimen is 0.47 g and promotes transition of the specimen into the solid phase.

Copyrights © 2013




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Journal Info
Makara Journal of Technology
Website

Abbrev

publication:mjt

Publisher

Universitas Indonesia

Subject

Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Engineering Materials Science & Nanotechnology Mechanical Engineering

Description

MAKARA Journal of Technology is a peer-reviewed multidisciplinary journal committed to the advancement of scholarly knowledge and research findings of the several branches of Engineering and Technology. The Journal publishes new results, original articles, reviews, and research notes whose content ...