The improving effect of rate promoters has been investigated by experiments at pilot plant scale in conditions close to the operating conditions of the top zone of a typical hot potassium carbonate industrial packed bed absorber. The evaluation of promoter enhancement factor has been done by successive experiments with absorption of CO2 into water, into carbonate solution and into promoted carb...

Hot water supplies account for approximately 30% of energy consumption in residential sectors of Japan; it is therefore important that the energy efficiency of water heaters be improved. Absorption heat pump water heaters are expected to provide greater efficiency than conventional water heaters that use gas. However, the absorption systems have larger volumes and are not widely accepted in the...

In this paper, using parabolic mirrors, a solar field was designed, which was related to a storage tank for a residential complex in the city of Tafresh located in the center of Iran. The design was performed for the existing oils: VP1, THERMINOL 66, THERMINOL 59. Finally, considering an organic cycle with R123 as working fluid and assuming a minimum length required for oil flow rate to reach a...

ABSTRACT This paper presents the thermodynamic and hydrodynamic feasibility of the application of the ammonia-water absorption system for transportation of low-grade thermal energy over long distance. A model is built and analyzed, and it shows satisfactory and attractive results. When a steam heat source at the temperature of 120C is available, the user site can get hot water output at about 5...

This paper proposes a probabilistic model with the aim to reduce solar energy operation cost and CO2 emissions of multi-carrier microgrid. The MCMG in this study includes various elements such as combined heat power (CHP), electrical pump (EHP), absorption chiller, panels, thermal storages. A MILP is proposed manage commitment producers, storage equipment, amount selling/buying upstream network...

Fruiting bodies of Phellinus linteus were extracted by hot water and alkali methods. Sugar contents of PL-H (hot water extract) and PL-A (alkali water extract) were 81.1%, 37.4% and protein contents were 6.2%, 21.8%, respectively. Amino acid pattern showed that two extracts contained large amount of aspartic acid and alanine. Two extracts showed characteristic IR absorption pattern for glycosid...

Dynamic models of liquid chillers are gaining importance in recent years as tools for evaluating feedback controllers and to study transient system performance in general. Such system models consist of component models for the heat-exchangers, the compressor and the expansion device. The modeling of the heat-exchangers is particularly significant as they constitute the largest thermal capacitan...

This study reports a preparation method of a new moisture swing sorbent for CO2 capture from air. The new sorbent components include ion exchange resin (IER) and polyvinyl chloride (PVC) as a binder. The IER can absorb CO2 when surrounding is dry and release CO2 when surrounding is wet. The manuscript presents the studies of membrane structure, kinetic model of absorption process, performance o...

Investigating the pool boiling process in absorption chiller generator by studying valid parameters may enhance chiller?s COP. In present study, transient 2-D numerical modelling of LiBr/H2O solution was carried out using two-phase Eulerian-Eulerian approach, extended Rensselaer Polytechnic Institute model and renormalization group k-? turbulence model. The applied on three types bare, notched ...

Chiller adalah mesin refrigerasi yang fungsi utamanya mendinginkan air pada sisi evaporator. Air kemudian dialirkan ke AHU (Air Handling Unit) untuk didinginkan dan dihembuskan dalam ruangan. Penghapusan panas atau dimulai di Mesin ini memiliki keunggulan lebih hemat energi digunakan gedung bertingkat. Penelitian bertujuan merancang membangun chiller berkapasitas 6 KW, menggunakan sistem kompre...