Shi Yushu

Bio: Shi Yushu is an academic researcher from China University of Petroleum. The author has contributed to research in topics: Heat exchanger & Condenser (heat transfer). The author has an hindex of 2, co-authored 6 publications receiving 15 citations.

Discontinuous fin-separated heat pipe new fan and production method thereof

Abstract: The invention relates to the field of new fan machinery, in particular to a discontinuous fin-separated heat pipe new fan The discontinuous fin-separated heat pipe new fan comprises a condenser and a evaporator The condenser is located above the evaporator The upper end of the condenser is connected with the upper end of the evaporator through a steam riser The lower end of the condenser is connected with the lower end of the evaporator through a condensate downcomer Each of the exhaust opening of the condenser and the new air feed inlet of the evaporator is provided with an axial flow fan The fins of the condenser and the evaporator are divided into two parts which are in left-right staggered arrangement, and the part with more fins is disposed on the air inlet side By dividing the fins into two parts in left-right staggered arrangement, air turbulence can be generated at the staggered parts of the fins, air speed is reduced, turbulence heat exchange intensity is increased, heat exchange is intensified, and good heat exchange effect of the whole heat exchange element is achieved while metal consumption and heat exchange area are not increased; air speed is lowered to increase heat exchange time, and air and work medium heat exchange efficiency is increased

Separation type heat pipe bathing wastewater waste heat recovery system

Abstract: The utility model discloses a separation type heat pipe bathing wastewater waste heat recovery system relates to heat transfer technical field, and this system of separation type heat includes evaporimeter and condenser, the condenser is higher than the evaporimeter, the inside heat exchange system that all is equipped with of evaporimeter and condenser, heat exchange system includes an at least heat pipe, heat exchange system in the evaporimeter links to each other through vapor uptake and lime set downtake respectively with the heat exchange system both ends in the condenser and forms closed recirculation, evaporimeter one side is equipped with the water inlet, and the opposite side is equipped with the outlet, condenser one side is equipped with send the mouth of a river, and the opposite side is equipped with the delivery port. The utility model discloses a system simple structure, realizability is strong, through using the utility model discloses a heat exchange system, the festival depletion row that can realize the energy, to sustainable development, the environmental protection, economic development all has of great significance.

Separation type heat pipe bathing wastewater waste heat recovery system and method

Abstract: The invention discloses a separation type heat pipe bathing wastewater waste heat recovery system and method, and relates to the technical field of heat exchange. The separation type heat pipe system comprises an evaporator and a condenser. The condenser is higher than the evaporator. Heat exchange systems are arranged in the evaporator and the condenser. Each heat exchange system comprises at least one heat pipe. The two ends of the heat exchange system in the evaporator and the two ends of the heat exchange system in the condenser are connected through a steam ascending pipe and a condensate descending pipe to form closed circulation. A water inlet is formed in one side of the evaporator, and a water drainage opening is formed in the other side of the evaporator. A water supply opening is formed in one side of the condenser, and a water outlet is formed in the other side of the condenser. The system is simple in structure and high in realizability; by means of the heat exchange systems, consumption reduction and emission reduction of energy can be achieved, and great significance in sustainable development, environment protection and economic development is achieved.

Indoor airflow and pollutant spread inside the cleanroom with micro-porous supplying panel and different ventilation schemes: Analytical, numerical and experimental investigations

Abstract: The airflow distribution and human thermal comfort at different supply airflow rates, as well as cleanliness recovery characteristic of indoor pollutant were numerically and theoretically investigated in a Class 10, 000 cleanroom. Computational fluid dynamics models of the cleanroom with three ventilation schemes, where the position of the micro-porous air supplying panel was altered to create unidirectional low-turbulence flow, were built and validated by the on-site measurements that carried out in a full scale test room. The results of theoretical analysis of cleanliness recovery characteristic were compared with numerical ones, to identify whether the decay equation could accurately predict the cleanliness recovery characteristic of different ventilation schemes. It was found that air distribution was generally uniform, and a small temperature gradient was still observed. Air change rate (ACH) played an important role in the indoor airflow field, and particularly it has a distinct effect on the deflection and the distribution of thermal plume (e.g. in the scheme of lateral ventilation). For large ACH, removal of pollutant (e.g. in the scheme of combined ventilation) could be enhanced, whereas there was a risk of thermal discomfort (e.g. in the scheme of vertical ventilation). Furthermore, decay equation was demonstrated that it was not suitable for all ventilation for predicting the cleanliness recovery time. Present work certainly adds to our understanding of the micro-porous panel ventilation in cleanrooms. Present investigation has a number of important implications for future cleanroom practice.

Experimental and Simulation Studies on Thermoelectric Cooler: A Performance Study Approach

Abstract: The current experimental and simulation studies focus on two distinctive approaches on developing performance specifications on a typical thermoelectric cooler. The performance specifications considered for the current study involves cooling capacity, voltage, and current for different temperature ranges on hot side of the module. Simulation studies were carried out using COMSOL Multiphysics software for analyzing the coefficient of performance (COP). Thermoelectric cooler’s performance was simulated for the module’s hot side temperature ranges of about 303.15–333.15 K with a stipulated temperature interval of around 5 K. COP is evaluated at various temperature ranges (20 K, 40 K, and 60 K) over the module for each temperature prevailing on the hot side. The whole system is numerically modeled and the final attained results were correlated with the results obtained from simulation. Factors considered for modeling includes Seebeck coefficient, thermal conductivity, and resistivity variation of the Peltier elements.

Finite element analysis of convective nanofluid equipped in enclosure having both inlet and outlet zones

Abstract: The current investigation owns the mathematical and computational analysis of the forced and free convection in a square shape enclosure with inlet/outlet opening. The flow field is manifested with CuO nanoparticles along with the porous media assumption. The left boundary is uniformly heated while the right wall is taken cold. The force flow constraint is implemented on the openings ports and the remaining portions are kept adiabatic. To be more specific the mixed convection transportation in the regime persists because of thermal difference in-between the heated source and cold inflow of fluid. For possible insight, the physical model is translated in terms of the differential systems. To report solution the finite element method has been adopted. The quantities of interest include the flow and heat transportation individualities. The output of computational scheme towards various controlling parameters are offered by means of both the contour maps and line graphs. It is noticed that the flow patterns identify forced flow at low Grashof number while the higher porous permeability possess the natural convection transportation. Additionally, as the heated source length heightens thermal distributions inside the cavity becomes intensify.