NeGeV: next generation energy efficient ventilation system using phase change materials

Abstract

Product development in the HVAC business segment are continually showing disturbingly slow annual increases in product performance, gradually reducing profitability in the market. Cooling and heating technologies applied in the HVAC industry range from simple natural cooling to more advanced active solutions based on conventional compression technology, but the performance increase is fundamentally incremental. This paper presents the NeGeV project which will provide an innovative solution demonstrating a leap in ventilation systems performance through the use of phase change materials for active heat recovery during periods of cooling needs. The project will develop, design and produce a prototype system and document its performance through certified tests. Through development of intelligent controls for the system, the project will demonstrate the potential for system integration into a smart grid application of load shifting and optimal operation control. In addition, the technical and economic feasibility of the prototype will be evaluated considering an office-space case study.

Application of a Reduced-Dimensional Model for Fluid Flow between Stacks of Parallel Plates with Complex Surface Topography

“…This work applies the reduced-dimensional model with multichannel height distribution to a practical engineering problem and shows satisfactory accuracy. The observations made from the studies herein provide confidence in the TES module designed in the project [1][2][3]. However, there are still many aspects that can be improved for practical engineering problems and even the considered application itself.…”

“…The presented work stems from a project to design a thermal energy storage (TES) system based on stacks of Compact Storage Module (CSM) plates filled with phase change material (PCM) [1,2] to be integrated into building ventilation systems [3]. TES systems play a critical role in sustainable energy production and consumption.…”

Review of energy-efficient HVAC technologies for sustainable buildings

“…Development of new materials with enhanced thermal properties and sustainability credentials will enable the construction of more energy-efficient HVAC systems and building envelopes. Collaboration between HVAC manufacturers, building designers, policymakers, and energy providers will be essential to developing integrated, sustainable solutions that meet the evolving needs of buildings and occupants (Lee & Lee, 2023, Veje, et. al., 2019, Vujanović, et.…”

Topography Optimisation Using a Reduced-Dimensional Model for Convective Heat Transfer between Plates with Varying Channel Height and Constant Temperature

“…The particular system that inspired this work is a thermal energy storage (TES) system based on stacks of compact storage module plates filled with phase change material (PCM) (Hassan et al 2023;Dallaire et al 2022) to be integrated into building ventilation systems (Veje et al 2019). To simplify the model for initial developments and demonstrations of the power of reduced-dimensional models, the plate temperatures are assumed to be predefined and constant.…”