Solar drying

Drying plays an important process for wastewater sludge management, as it can minimise the volume of wastewater sludge before disposal, and consequently the cost of storage, handling and transport. In this study, the wastewater sludge was dried by using a solar tunnel greenhouse drying system.

8p viritesh 02-04-2024 4 1   Download

Wet periods are evidenced by dark olive green mixed lithology (sandy, clay, and silts) and high values in MS and log(Sr/Ca). On the other hand, dry periods are associated with light olive green clayey mud lithology and high values in log(Ca/K). We relate the wet periods to negative North Atlantic Oscillation (NAO–) and the dry periods to NAO+. Additionally, all wet periods are related with time of low solar activity and dry periods, except Dalton Minimum, are related with periods of high solar activity.

10p tanmocphong 29-01-2022 10 1   Download

The new benzimidazolium derivative (SM-1) salt with ion exchange from the (SM-0)was fabricated and characterized by protonnuclear magnetic resonance (1 H-NMR), carbon-nuclear magnetic resonance (13C-NMR), Fourier-transform infrared spectroscopy (FTIR), electrospray ionization (EIS-MS), thermal analysis (TG), cyclic voltammetry (CV), and ultraviolet-visible spectroscopy (UV-vis), for electrolytes (liquid or dried) in the DSSC charge transportation mechanism.

11p tudichquannguyet 29-11-2021 18 0   Download

The solar drying system utilizes solar energy to heat up air and to dry any food substance loaded, which is beneficial in reducing wastage of agricultural products and helps in preservation of agricultural products. A solar cooker is a device which uses the energy of sunlight to heat food or drink or to sterilize it. The vast variety of the solar cookers presently in use are cheap, low tech devices, because they use no fuel and cost, nothing to operate, they reduce air pollution and slow deforestation and desertification.

6p chauchaungayxua12 29-07-2021 8 1   Download

The aim of the study was to evaluate the effect of environmental variables and different seasons onnormal milk constituents in Marathwadi buffalo. The milk samples were collected from Marathwadi buffaloes(n=6) fortnightly while, environmental variables i.e., dry bulb temperature (DbT), wet bulb temperature (WbT), wind speed (WS) and solar intensity (LUX) were recorded at a weekly interval (at 14:00 hrs).

5p cothumenhmong11 11-05-2021 15 2   Download

The aim of the present study was to assess the effect of Tulsi (Ocimum tenuiflorum) treatment on sensory qualities of dry fish along with economic feasibility analysis of low cost solar tent dryer and open sun drying.

8p cothumenhmong11 11-05-2021 8 2   Download

The present work was aimed to study the rehydration characteristics of dehydrated different onion slices namely, Arka kalyan, Bijapur white and Arka pragati which were dried under open yard sun drying, solar tunnel drying and dehumidified air drying methods. The onions were pre-treated with 10% sodium chloride (NaCl) for 1h, 0.2% potassium metabisulphite (KMS) for 15 minutes and both 10% sodium chloride (NaCl) + 0.2% potassium metabisulphite (KMS) for 15 minutes at room temperature before drying. Rehydration experiments was conducted with three different temperatures (25, 45 and 65 °C),...

9p gaocaolon9 22-12-2020 11 2   Download

The process of evaporation is influenced by a number of factors, the most common and important meteorological parameters affecting evaporation are solar radiation, temperature, relative humidity, wind speed and atmospheric pressure. There are number of models for the estimation of evaporation developed by investigators in different fields of study. The interrelated factors are incorporated into various formulae for estimating evaporation. Due to complex interactions between the components of the land-plantatmospheric systems the reliable estimation of evaporation are extremely difficult.

14p caygaocaolon8 07-11-2020 11 1   Download

A study was conducted for drying of tomatoes in the developed solar drier at three different air velocities of 2 m/s, 3 m/s, 4 m/s respectively. The samples were given pre-treatment with KMS+CaCl2 and NaCl. Open sun drying was carried out simultaneously on the other side and was taken as control.

8p trinhthamhodang1215 23-09-2020 12 2   Download

Fruit leathers are made by drying a very thin layer of fruit puree to produce a product with a texture similar to soft leather. Fruit leather is the product prepared by blending fruit purees or pulp extracted from ripe pulpy fruit, sugar or other nutritive sweeteners and other ingredients and additives desired for product and dehydrated to form sheet which can be cut to desired shape and size. The preservation of fruit leathers depends on their low moisture content, the natural acidity of the fruit used and high sugar contents.

6p caygaocaolon6 30-07-2020 14 1   Download

Preservation of fruits, vegetables, and food are essential for keeping them for a long time without further deterioration in the quality of the product. Solar drying has been used since time immemorial to dry plants, seeds, fruits, meat, fish, wood, and other agricultural, forest products. The aim of the dryer is mainly for the welfare of the marginalized and poor farmers those who can’t afford hi-tech facilities and equipment’s to preserve their agricultural products. Drying of Safed Musli (Chlorophypum boribilianum) in open sun drying require more time and affected its quality.

15p nguaconbaynhay6 24-06-2020 16 1   Download

Drying is an important post-harvest preservation technique of spices. As drying is an energy intensive process, accessibility to good drying methods is essential for the economical betterment of the farmers. Solar energy based drying techniques offer better return on investment to farmers. Developed hybrid solar drying system can be used for drying various agricultural products like spices, fruits and vegetables. The dryer has been coupled to an electric air heater having an auto controlling facility and blackened surface of absorber for improved drying efficiency.

7p gaocaolon5 14-06-2020 16 1   Download

This paper aims to quantify the amount of water surface evaporation with special regard to the EWM evaporation pan and to relate the direct measurements to the Penman and other empirical equations. Based on the available 10-minute interval data on the EWM pan evaporation and the data on precipitation for the same intervals, the net water surface evaporation was estimated for the period from July 2010 to October 2012 (excluding the time EWM pan did not function in winter).

13p angicungduoc5 13-06-2020 10 0   Download

Preservation of fruits, vegetables, and food are essential for keeping them for a long time without further deterioration in the quality of the product. Solar drying has been used since time immemorial to dry plants, seeds, fruits, meat, fish, wood, and other agricultural, forest products. The aim of the dryer is mainly for the welfare of the marginalized and poor farmers those who can’t afford hi-tech facilities and equipment’s to preserve their agricultural products.

10p angicungduoc5 12-06-2020 12 2   Download

The proper drying techniques are the most important aspect for preservation of aroma and colour of basil leaves. The use of solar dryer helps to reduce the moisture content and improves the quality product. Drying treatment and experimental method for solar drying was carried out at the temperatures of 45°C, 55°C and 65°C to find and suggest the optimum drying condition for acquiring quality dried basil leaves and active ingredient like uginol, caryophyll of basil leaves.

10p angicungduoc5 12-06-2020 12 1   Download

Minimising Post Harvest Loses for the perishable crops are the major area of demand driven technology intervention have been sorted in the present era in the country. India as an tropical country, which has large scope for solar drying, and simultaneously it is an agrarian country with huge agricultural wastes generated after harvesting every seasons produces large scale Biomasses.

7p nguathienthan5 04-06-2020 12 0   Download

The performance of double slope stepped (complementary to each other on the basis of sun exposure) solar still has been investigated experimentally in seasonally varying climatic conditions in dry tropical region at Amroha, India. This innovative still design showed significant improvement (by 106 %) in the productivity, compared to existing models.

6p cleopatrahuynh 01-06-2020 10 0   Download

This paper presents the underlying principles of CFD, the advantages and disadvantages of using CFD, and the recent works that have been carried out. The paper focuses on the application of CFD in solar drying of food products, and identifies potential areas of improvements for further research.

16p cleopatrahuynh 01-06-2020 13 1   Download

In this paper a review is presented on the different techniques used in solar drying, different aspects of solar drying, and modelling of thin layer and deep bed. In addition, principles of operation of solar drying systems and practical examples of some of the available solar dryer systems are presented. The main objective of this review is to identify areas of improvement in solar grain drying systems that need to be addressed for performance enhancement and quality assurance of the relevant solar drying technologies.

22p cleopatrahuynh 01-06-2020 10 0   Download

A solar tunnel dryer installed at Ramakrishna Agro. Vegetables & Food Product Kodoli, was evaluated. Its performance for Basil leaves drying and also its techno-economic analysis was carried by different indicators such as Net Present Worth (NPW), BenefitCost ratio (B:C) and Payback Period.

8p nguaconbaynhay5 16-05-2020 9 1   Download