125results about How to "Lower carbon dioxide levels" patented technology

The present invention relates to an exhaust apparatus for releasable or permanent connection to a personal protection respiratory device that defines a filtered air volume adjacent to the face of a wearer and comprises at least one exhalation valve. The exhaust apparatus comprising a powered blower in fluid connection with the at least one exhalation valve, the blower being operable to draw a portion of the wearer's exhaled breath through the at least one exhalation valve. Using such an exhaust apparatus for releasable connection to a personal protection respiratory device improves the comfort and overall experience for respirator wearers who use the respirator for intensive work, and / or for long periods of time, and / or in hot and humid environmental conditions by removing the heat and moisture build-up inside the respirator.

The invention discloses an air purification method and system adopting fresh air and belongs to the indoor environment purification technology. The air purification system is characterized by comprising a casing, an air quantity regulation part and at least one primary filter screen layer, wherein an air inlet and an air outlet are formed in the casing, and the air inlet is used for introducing outdoor air; a first air treatment assembly and a second air treatment assembly are arranged in the casing, the first air treatment assembly comprises a power fan, the second air treatment assembly comprises a reusable dust collecting device, and the purification performance of the dust collecting device does not get poor after cleaning; the air quantity regulation part is used for controlling the rotating speed of the power fan, so that the speed range of air output from the air outlet ranges from 0.3 m / s to 5 m / s, and the primary purification efficiency of the dust collecting device for PM 2.5 is enabled to be as high as 80%-99.9%.

The present invention relates to an exhaust apparatus 10 for releasable or permanent connection to a personal protection respiratory device 20 that defines a filtered air volume adjacent to the face of a wearer and comprises at least one exhalation valve 26. The exhaust apparatus 10 comprising a powered blower 30 in fluid connection with the at least one to exhalation valve 26, the blower 30 being operable to draw a portion of the wearer's exhaled breath through the exhalation valve 26. Using such an exhaust apparatus 10 improves the comfort and overall experience for respirator wearers who use the respirator for intensive work, and / or for long periods of time, and / or in hot and humid environmental conditions by removing the heat and moisture build-up inside the respirator.

The invention relates to light-weight and energy-saving plastering mortar, which is prepared by mixing the following components in part by weight: 30 to 40 parts of ordinary Portland cement, 2 to 4 parts of hydrated lime, 10 to 20 parts of light aggregate, 40 to 50 parts of heavy aggregate and 1.0 part of compound aid, wherein the light aggregate is an inorganic vitrified hollow microporous material of which the fineness is below 100 meshes; and the heavy aggregate is aeolian sand. During construction, the light-weight and energy-saving plastering mortar is diluted by water added in an amountwhich is 30 to 50 percent based on the weight of the light-weight and energy-saving plastering mortar, and is stirred and mixed mechanically or manually and uniformly until the plastering mortar has the suitable viscosity, and then mechanical spraying or manual construction Is performed. According to the concept of light weight and eco-environmental protection, the light-weight and energy-saving plastering mortar is made light by adopting the inorganic vitrified hollow microporous material, and is matched with the primary elastic modulus of a light-weight wall body to reduce coefficients of heat conductivity and reduce the thermal bridge effect, so the light-weight and energy-saving plastering mortar prevents hollowing, cracking and shedding, insulates heat and reduces noise, and is favorable for mechanized construction. The aeolian sand is used as aggregates, so the plastering mortar has excellent grading distribution and has the prominent three-dimensional texture; and the special compound aid is adopted to improve the peaceability of the mortar to achieve the excellent construction effect.