Fabrication of Instant Water Cooler Using Thermoelectric Module

Hot and cold water is always needed for human being and we use different systems to get hot and cold water. The devices which are available in market for heating and cooling purpose have more costly and heavy like refrigerator, electric heater and solar water heater. So, we decide to make project on “fabrication of instant water cooler using thermoelectric module to get cold water and hot water at same time.” Peltier effect is used to get cold as well as hot water at same time with cheapest cost and applicable to use in residential area also. Our aim is toward developing a system which will provide cooling and heating effect at same time without moving mechanical parts. Thermoelectric cooling and heating system not require working fluids. This device can be used to cool water without refrigerants. And simultaneously heating can be achieved from the hot side of thermoelectric module to heat the water, this because of heat absorption and rejection using Peltier element. This compact design is very useful in elimination of CFC and it would replace refrigeration system.

Do They See a Half-Full Water Cooler?

In the present study, relationships among group composition of trait optimism (the mean, standard deviation, and minimum and maximum scores of optimism), group cohesion, and three group performance variables (task performance, contextual performance, and creative performance) were examined. Multisource data were collected from 56 workgroups including 202 group members and 56 group leaders. We found that the mean, maximum, and minimum operationalizations of group optimism composition were positively related to the three group performance variables and that group cohesion mediated the optimism–performance relationships for the mean and minimum operationalizations of group optimism. We recommend that practitioners generally consider selecting optimistic individuals and consider that the trait optimism level of a group's least and most optimistic members may impact group outcomes.

Experimental Investigation of Evaporative Hybrid Water Cooler

The water cooler is a device which cools and dispenses water which is used to provide easy access to drinking water. The water coolers which are currently available in the market are works on the concept of VCR (Vapour Compression Refrigeration) System. These water coolers consume high electric power almost 250-350W, these systems also have huge impacts on the ecosystem due to CFC and HCFC emissions. Best alternative for existing VCR based water cooler is the system of evaporative cooling with thermoelectric cooler having affordable cost and eco-friendly. Hybrid water cooler works on the principle of evaporative cooling and Thermoelectric cooling, which provides cold water, hot water and it works as an Air cooler also. Evaporative cooling works on concept of evaporation of water and rate of evaporation is totally depending on humidity of surrounded air. By using evaporative cooling obtain the temperature difference of 8-10°C. During the hot day, the temperature of water in the water tank would be 40°C, then the evaporative cooling alone will not be sufficient to cool the water to 22°C, which is ideal temperature of water for drinking purpose. So, thermoelectric module works on principle of Peltier effect which can produce the temperature difference across its surfaces on applying potential difference across its terminals. As the thermoelectric module produce the temperature difference up to 40°C across its surface, it can easily cool the water to 20°C. More than 60% energy could be obtained by this system in comparison with respect to existing VCR based cooler, so this system can be used as an eco- friendly and cost effective.

The Streaming Souls of White Folk

In the second July of the ongoing pandemic, with his cinephilia fading, Film Quarterly columnist Bilal Qureshi was jolted awake by the biting excellence of HBO’s six-part series The White Lotus, the undeniable water-cooler show of the summer. A classis whodunnit set among a collective of entitled, smug, and vindictive wealthy tourists at a Hawaiian luxury resort, The White Lotus proved a provocative meditation on class, privilege, and the frayed national mood. To have a work of mainstream “prestige” TV—with is lavish production values and characteristic wealthy white angst—inspire confusion and disagreement over issues of whiteness and privilege strikes Qureshi as a welcome shift from streaming’s usual habit of lulling audiences into one-dimensional distraction and cements The White Lotus’s status as a definitive pandemic-era piece of filmmaking.