01 Jun 2018

In days of yore, building a sustainable family residence meant spending substantially more than for a regulation dwelling. Yet an engineer and an artist have constructed a positive-energy home at less than the usual cost of construction. Read the full article in Ecolibrium, the official journal of AIRAH.

Journal article
28 Mar 2013

Solar airconditioning is an emerging renewable energy technology that is technically proven and suitable for wide scale deployment. Unfortunately, solar airconditioning cannot compete on a level playing field with other renewable energy technologies because it is not eligible for government rebates such as those awarded to solar photovoltaic electricity or solar hot water systems.

Conference paper
07 Jan 2014

This paper explores the potential for solar thermal cooling to succeed commercially, and more specifically, the application scenarios where this is most likely. This mainly philosophical contribution hopes to highlight directions for future research.

Conference paper
09 Feb 2015

The photovoltaic thermal (PV/T) driven desiccant air cooling process could be a good solution to the conventional air cooling cycle in terms of energy saving, where the latent cooling load would be removed adiabatically. However, problems exist where the required desiccant regeneration temperature (60oC - 80oC) often exceeds the outlet fluid temperature from standard PV/T collectors.

Conference paper
27 Jun 2018

Desiccant wheel based air-conditioning systems (DWAC) include a desiccant wheel component that performs latent cooling coupled to another component, for example an indirect evaporative cooler (IEC also known as a dew point evaporative cooler), that performs the sensible cooling without adding moisture into the air flow.

Conference paper
15 May 2019

Conventionally in building performance simulations (BPS), it is assumed that air entering outdoor HVAC equipment is at the outdoor ‘ambient’ temperature, obtained from a weather file. However, significant spatial variations exist in outdoor air temperature fields, especially within the thermal boundary layers that form near exposed surfaces like roofs.

Conference paper
01 Jan 2017

This paper provides a snapshot of future HVAC in a net-zero world, and outlines some of the mainthemes from the workshop discussions such as:

Report
20 Jun 2019

This report presents a summary of the findings and activities of Stage 3 of the LCL-CRC research project RP 1033 “High Performance Commercial Building HVAC”.

Report
11 May 2018

Highlights

  • An isothermal process improves the dehumidification performance around 48%.
  • A mathematic model could be used to predict the performance of the new wheel.
  • The overlap of desiccant layers restricts heat exchange performance of the wheel.
  • Desiccant cooling system with the new wheel has an energy efficiency ratio of 9.3.

Abstract

Journal article
22 Aug 2013

Solar desiccant air-conditioning is an emerging technology that offers the promise of reducing reliance on grid connected electricity for providing comfort air-conditioning. Development of a method of assessing the seasonal energy savings of these devices would enable a fair comparison with alternative devices. This could be used in policy support mechanisms to assist industry growth.

Journal article
25 Nov 2016

Solar heating and cooling (SHC) systems are currently under rapid development and deployment due to their potential to reduce the use of fossil fuel resources and to alleviate greenhouse gas emissions in the building sector – a sector which is responsible for ~40% of the world energy use. Absorption chiller technology (traditionally powered by natural gas in large buildings), can easily be retrofitted to run on solar energy. However, numerous non-intuitive design choices must be analyzed to achieve the best techno-economic performance of these systems.

Journal article