In this paper, the application of evaporative cooling for refrigeration cycle to reduce power consumption in hot climates is emphasized. Experimental and analytical investigations were performed in order to specify the effect of evaporative cooling condenser instead of the commonly used air cooling condenser in window-air-conditioners. Evaporative condenser can reject more heat, thereby preve...

the present paper describes the designing of a thermally and economically optimum mechanical draft counter-flow wet cooling tower. the design model allows the use of a variety of packing materials in the cooling tower toward optimizing heat transfer. once the optimum packing type is chosen, a compact cooling tower with low fan power consumption is modelled within the known design variables. mor...

Power line channel often suffers from impulsive interferences generated by electrical appliances. Therefore, power line communication (PLC) makes the degradation due to such the impulsive interferences. Middleton’s Class A noise model is frequently utilized for the modeling of such the impulsive noise environment. In this paper, we deal with turbo decoding for turbo codes over additive white Cl...

During extremely hot summer days, air conditioning systems are known as major electricity consumers in residential, commercial and industrial sectors. Moreover, high energy requirement of multiple-chiller plants may cause an interconnected power grid be faced with annual on-peak electrical demand, load-generation mismatch, voltage collapse and catastrophic wide area blackout. Therefore, this pa...

gas turbines play an important role in supplying power for the country especially in peak electricity load. the main disadvantages are the turbines, they produce large changes are a result of climate change. however, in times of peak electricity grid and at the same time warm months, can produce gas turbines under the effect of ambient temperature, the amount of reduced considerably. the method...

Context: Several metrics have been proposed to measure the extent to which class members are related. Connectivity-based class cohesion metrics measure the degree of connectivity among the class members. Objective: We propose a new class cohesion metric that has higher discriminative power than any of the existing cohesion metrics. In addition, we empirically compare the connectivity and non-co...

Iterative processing for linear matrix channels, aka turbo equalization, turbo demodulation, or turbo CDMA, has traditionally been studied as the concatenation of conventional error control codes with the linear (matrix) channel. However, in several situation, such as CDMA, the channel itself contains inherent redundancy, such as a repetition code contained in the direct-spread signature sequen...

Turbo codes enable high quality communication links by offering exceptional error correction capabilities. Turbo coding is proposed in the coming Universal Mobile Telecommunication Systems (UMTS) standard by the 3GPP for high data rates channels. Direct realization of the Turbo decoder algorithm in hardware encounters many challenges, such as algorithm complexity, large silicon area, high power...