J Siddhartha Yadav

Les conomies d' nergie et l'am lioration de l'efficacit des syst mes nerg tiques constituent une t che importante sur la voie d'un avenir plus durable. L'int r t r cent pour les syst mes de production combin e de chaleur et d' lectricit (PCCE) solaires thermiques petite chelle a co ncid avec la croissance de la demande d'approvisionnement en lectricit distribu e dans les zones mal desservies par les centrales lectriques centralis es. Une approche technique potentielle pour r pondre cette demande est le capteur solaire thermique plat coupl un moteur thermique cycle organique de Rankine (ORC).

Il risparmio energetico e il miglioramento dell'efficienza dei sistemi energetici sono un compito importante nel percorso verso un futuro pi sostenibile. Il recente interesse per i sistemi di cogenerazione solare termica su piccola scala ha coinciso con la crescita della domanda di forniture elettriche distribuite in aree scarsamente servite da centrali elettriche centralizzate. Un potenziale approccio tecnico per soddisfare questa domanda il collettore solare termico piatto accoppiato a un motore termico a ciclo Rankine organico (ORC).

Energieeinsparungen und Effizienzverbesserungen von Energiesystemen sind eine wichtige Aufgabe auf dem Weg zu einer nachhaltigeren Zukunft. Das j ngste Interesse an kleinen solarthermischen Kraft-W rme-Kopplungssystemen (KWK) f llt mit der wachsenden Nachfrage nach dezentraler Stromversorgung in Gebieten zusammen, die von zentralen Kraftwerken schlecht versorgt werden. Ein m glicher technischer Ansatz zur Deckung dieser Nachfrage ist der Flachkollektor in Verbindung mit einem ORC-W rmekraftwerk (Organic Rankine Cycle).

One third of heat energy generated by the automotive internal combustion engine is wasted in the exhaust system. The total heat energy supplied to the engine in the form of combustible fuel, approximately 35% to 40% is converted into productive mechanical work, the remaining energy in the form of heat is expelled by the exhaust gas resulting in the rise of entropy and serious environmental pollution, thus there is a demand to utilize this waste heat from the vehicle into useful work output. Thus, the wasted heat can be used to run the absorption refrigeration system. The engine exhaust system is connected to the generator of the refrigeration system to supply the input heat required for the refrigeration process. The temperature of the evaporator was measured at various loading condition of the engine. The result indicates the performance of the refrigeration system for the month of March 2019. In this work, maximum cooling temperature was attained to be16⁰

This book deals with using a blend of C. N. G. and Petrol in a single cylinder 4-stroke petrol engine & finding its emission characteristics at various proprtions. The proportions included the range of 10% CNG and 90% Petrol to 80% CNG & 20% Petrol. The proportions flowing into engine was controlled by flow meter placed nearby the engine. Once the set up was ready the distance covered by the blend and individual fuel of petrol and CNG are found during running conditions. This experimentation is done on the bikes which we use in our day to day life. Results from this book helps in finding an alternate solution to our major problem of depleting fossil fuels.

Energy savings and efficiency improvements of energy systems are an important task on the path towards a more sustainable future. Recent interest in small-scale solar thermal combined heat and power (CHP) power systems has coincided with demand growth for distributed electricity supplies in areas poorly served by centralized power stations. One potential technical approach to meeting this demand is the flat plate solar thermal collector coupled with an organic Rankine cycle (ORC) heat engine.