In order to improve the cooling efficiency of data centre HVAC (Heating Ventilation and Air Conditioning) system save costs, this paper proposes a control strategy that combines traditional method with Nelder Mead method, in optimize equipment operating parameters. Firstly, selected Northeast China as research object. Moreover, central air-conditioning system, object, was simulated on TRNSYS, w...

Climate change and resource energy depletion are already impacting ecosystems societies around the world. As a result, environmental sustainability has become one of humanity’s priority challenges. This study aims to use ecological multilayer material in order reduce impact carbon needs heating severe climates which people die each year from cold. The combination investigated gives low thermal ...

When the cascade heat pump system is applied as a multi-functional that can be used not only for hot water supply but also air-conditioning of buildings, low-stage cycle responsible indoor heating and cooling thermal load, high-stage by raising refrigerant temperature. Unlike existing designed with one operation mode supply, should considered various parameters. This study was proposed design s...

This paper presents current research on Direct Steam Generation (DSG) by the Solar Thermal Group at ANU. It includes ongoing work on a transient model for a dish steam cavity receiver that is suitable for model-based control of DSG as well as reporting on the experimental set-up on a new 500m paraboloidal dish solar concentrator. A comparison of two transient models of a dish steam cavity recei...

It is thought that there are 14 million standardised sea containers out of order, equal to 23.3 million twenty-foot equivalent unit (TEU), which could be devoted for other purposes. The COR-TEN®steel containers are the best, due to the features of the materials, to be used in applications intended for the accommodation of people. One of the uses is framed in the area of humanitarian help, as se...

This work presents the creation of a dynamic energy model able to simulate, with a reasonable workload, a very large number of integrated building-plant systems with different scales and resolutions, in order to have a design support for architects and designers, reducing their modeling effort and errors. The model includes the dynamic simulation of the building envelope, all the heating plant ...

A detailed model of the Net Zero Energy Town House in Toronto is developed in TRNSYS. The incorporation of thermal mass into the building envelope has been demonstrated to contribute to the enhancement of occupant comfort through the reduction of indoor temperature fluctuations. It has also been shown to cause a decrease in the overall energy consumption associated with the heating and cooling ...

Tri-generation plants will have an important role in the near future in the residential sector where heating and cooling demands come into play throughout the year. Depending on the building’s location, the characteristics of its enclosure and its use, the thermal loads and demands will be different. This article analyses and compares a combined cooling, heating and power (CCHP) system tested i...

System cost reductions and development of standardised plug-and-function systems are some of the most important goals for solar heating technology development. Retrofitting hot water boilers in single-family houses when installing solar collectors has the potential to significantly reduce both material and installation costs. In this study, the TRNSYS simulation models of the retrofitting solar...

The paper aims at studying different strategies for the optimal operation of Breathing Walls during summer. investigation is carried out by performing dynamic simulations on a case study. To this purpose, transient Finite-Difference numerical model Wall components, previously developed in Matlab and validated Authors, coupled with TRNSYS. study consists an office room located Milan, Italy, prov...