Abstract: A modular solar dryer (100) for drying and physical disinfection of ingredients is described that has a first hemispherical dome (104) that is positioned on base. A hemispherical second dome (208) is positioned below the first dome and includes hollow cylindrical cavity including utensils positioned on stand. A rectangular chamber is defined in a top end portion of the dryer (100) that includes a printed circuit board assembly (PCBA) (202), a motor (204) and an air circulator (206). The PCBA includes a controller (112), sensors and motor (204). The controller is configured to operate the dryer (100) in at least two modes. Notifications from the dryer are received on a user device (114). The dryer (100) operates on two modes of operation. A first mode is with moisture content based drying and a second mode is with exposed duration drying.

Abstract: A curved surface absorber type solar fluid heater having radially spaced curved surfaces, preferably hemispherical and closed at bottom periphery, defining a closed chamber termed as collector which receives a fluid to be heated. The curved surface absorber type solar fluid heater encompasses two radially spaced transparent curved surfaces preferably hemispherical, closed at bottom periphery, placed over collector termed as a glazing, and an insulated hemispherical hot fluid tank, placed within the cavity of inner curved surface of the collector and bottom insulation. A plurality of plumbing connections is made between the collector and the hot fluid tank with arrangement of non-return valves to prevent backflow of fluid from hot fluid tank towards the collector. An air vent is located at the highest position of the collector. A drain plug is located at a lowest position on the collector.

Abstract: A curved surface absorber type solar fluid heater having radially spaced curved surfaces, preferably hemispherical and closed at bottom periphery, defining a closed chamber termed as collector which receives a fluid to be heated. The curved surface absorber type solar fluid heater encompasses two radially spaced transparent curved surfaces preferably hemispherical, closed at bottom periphery, placed over collector termed as a glazing, and an insulated hemispherical hot fluid tank, placed within the cavity of inner curved surface of the collector and bottom insulation. A plurality of plumbing connections is made between the collector and the hot fluid tank with arrangement of non-return valves to prevent backflow of fluid from hot fluid tank towards the collector. An air vent is located at the highest position of the collector. A drain plug is located at a lowest position on the collector.

Abstract: In various embodiments, an air purification system (100, 300, 400) may include a first air filter (316, 416) that targets at least a first type of pollutant. In various embodiments, air that passes through the first air filter may be unobstructed by other air filters. In various embodiments, a second air filter (316, 416) may target at least a second type of pollutant that is different than the first type of pollutant. In various embodiments, air that passes through the second air filter may also be unobstructed by other air filters. In various embodiments, a controller (102, 302) may be configured to selectively move the first and/or second air filters to expose one or both of the first and second air filters to one or more air streams, e.g., based on user input and/or on one or more signals from one or more pollutant sensors (106, 306).

Abstract: A filter detection based air purification system for indicating the status of the filters is disclosed that includes a microprocessor configured to determine a status of a composite filter by monitoring a power consumption of the system and thereby comparing the power consumption with predefined values and reference values to revel the performance status of the system. The filter detection based air purification system operates in at least four modes of operation including a self check mode, a second calibration mode, a third normal mode, and a reset mode of operation that are indicated by predefined indicators positioned on a control panel. The indicators indicate to take appropriate actions to improve the system performance related to the conditions of the filters.

Abstract: A device (1) for subjecting a liquid to a purifying process comprises an assembly of a first container (10) and a second container (20) for receiving and containing a liquid, wherein means (11) for performing a purifying action on the liquid are arranged in the first container (10), wherein the second container (20) is arranged for receiving an overflow from the first container (10), and wherein a liquid passage (15) is present between the first container (10) and the second container (20). Furthermore, the device (1) comprises means (16) which are associated with the liquid passage (15) between the first container (10) and the second container (20), and which are adapted to assume various states, including a state for blocking the liquid passage (15), and a state for deblocking the liquid passage (15), wherein the device (1) may also be equipped with means (17) for controlling the blocking/deblocking means (16).

Abstract: A filter detection based air purification system for indicating the status of the filters is disclosed that includes a microprocessor configured to determine a status of a composite filter by monitoring a power consumption of the system and thereby comparing the power consumption with predefined values and reference values to revel the performance status of the system. The filter detection based air purification system operates in at least four modes of operation including a self check mode, a second calibration mode, a third normal mode, and a reset mode of operation that are indicated by predefined indicators positioned on a control panel. The indicators indicate to take appropriate actions to improve the system performance related to the conditions of the filters.

Abstract: A device (1) for subjecting a liquid to a purifying process comprises an assembly of a first container (10) and a second container (20) for receiving and containing a liquid, wherein means (11) for performing a purifying action on the liquid are arranged in the first container (10), wherein the second container (20) is arranged for receiving an overflow from the first container (10), and wherein a liquid passage (15) is present between the first container (10) and the second container (20). Furthermore, the device (1) comprises means (16) which are associated with the liquid passage (15) between the first container (10) and the second container (20), and which are adapted to assume various states, including a state for blocking the liquid passage (15), and a state for deblocking the liquid passage (15), wherein the device (1) may also be equipped with means (17) for controlling the blocking/deblocking means (16).