Energy, exergy, economic and environmental (4E) analysis of greenhouse dryer in no-load condition

Experimental investigation of a parabolic greenhouse dryer improved with copper oxide nano‐enhanced latent heat thermal energy storage unit

“…Also, similar variation in exergy efficiencies can be found in the literature. 16 In a survey done by Mishra et al, 59 solar heating equipment-assisted GD has been evaluated in Indian climate. The exergy efficiency of the system was obtained between 4.1% and 4.5%.…”

Sustainability of drying technologies: system analysis

“…Articles that carry out a 4E analysis, in general, present four separate analyses, with a discussion based on four parameters, mainly energy efficiency, exergy efficiency (or the sustainability index or improvement potential), CO 2 mitigation, and at least one of the aforementioned economic indexes. Examples of 4E analyses are described by Mishra et al 63 and Atalay and Cankurtaran 39 for solar dryers. Mishra et al 63 proposed a 4E methodology to evaluate the thermodynamic performance, environmental impact, and economic viability of greenhouse dryers under the humid climate conditions of North East India.…”

“…Examples of 4E analyses are described by Mishra et al 63 and Atalay and Cankurtaran 39 for solar dryers. Mishra et al 63 proposed a 4E methodology to evaluate the thermodynamic performance, environmental impact, and economic viability of greenhouse dryers under the humid climate conditions of North East India. The exergetic efficiency of the solar dryer was 4.5%, dropping to 4.1% under forced convection.…”

“…A higher value of SI indicates smaller harm to the environment and better sustainability of drying technology. 63…”

Experimental and simulation studies on the no‐load performance assessment of a domestic solar dryer

“…The maximum drying air temperature for the dryer in simple, with sensible and latent heat storage systems was reported to be 102.30°C, 86.51°C, and 86.42°C, respectively. Tesfaye and Habtu 39 tested a forced convection tunnel type mixed mode solar dryer under no load and reported that the maximum drying air temperature at the collector outlet was 74°C at 4:00 p.m. Mishra et al 40 developed a small scale mixed mode greenhouse solar dryer (embodied energy: 197.32 kWh) and tested under natural and forced convection modes. The energy and exergy efficiency for the dryer under natural and forced modes were reported to be 41.5% and 28.5%; and 4.5% and 4.1%, respectively.…”