“Desigrated”-Desiccant Integrated Façade for the Hot-Humid Climate of Bangkok, Thailand

Natchai Suwannapruk,Alejandro Prieto,Christien Janssen

doi:10.3390/su12135490

Natchai Suwannapruk, Alejandro Prieto + Show 1 more

Open Access

https://doi.org/10.3390/su12135490

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Journal: Sustainability	Publication Date: Jul 7, 2020
Citations: 3	License type: CC BY 4.0

Affiliation: Delft University of Technology

Abstract

“Desigrated” presented an attempt to integrate heat prevention strategies with low-ex cooling technologies, namely the desiccant and M-cycle evaporative cooling technology, in the form of a façade system for high-rise office buildings. The project targets to provide an alternative cooling solution for the hot and humid climate context of Bangkok. The results from experiments by various researchers are used as assumptions in developing the system, which was then evaluated through numerical methods and dynamic simulations. Being one of the prominent dehumidification technologies, a composite silica gel heat exchanger (CCHE) was implemented as the primary part of the façade system, while the M-cycle technology would also be implemented as a secondary cooling technique to cool down the supply air. The evaluation shows a promising result with up to 36% energy consumption reduction in comparison with the conventional cooling system, presenting itself as a transitioning tool in order to replace refrigerant cooling.

Highlights

IntroductionIn parallel to the rising temperature, the use of energy for space cooling has been tripled during the last twenty years: the rising demand has driven up carbon emission by three times since 1990
The results show that the proposed scenarios have lowered the cooling load of the room by an a3v.4e.r1a.gSeuopfp1ly9.7AikrWC,oenxdcietipotnfor the irregular trend which occurs at scenario 3.1 due to the relatively high supply temperature
The system configuration consists of two main components; the desiccant coated heat exchanger and the M-cycle unit

Summary

Introduction

In parallel to the rising temperature, the use of energy for space cooling has been tripled during the last twenty years: the rising demand has driven up carbon emission by three times since 1990. Due to the limited effect of government policies throughout the world, it is expected that the current trend of cooling demand will continue growing in the following years [2]. This situation provokes a dilemma, where the use of active cooling further contributes to global warming (due to the emissions from both the energy usage and the refrigerants required in the cooling cycle), which in turn increases the cooling demands, increasing the need for active cooling

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Conclusion