DIRECT DIGITAL CONTROL OF AIR HUMIDITY FOR PLANT RESEARCH
スポンサーリンク
概要
- 論文の詳細を見る
Direct digital control (DDC) system was employed in a growth chamber for accurate control of air humidity in wider regions. Control elements were composed of cooling brine coil, dehumidifying brine coil, reheating coil (electric heater), heating coil (electric heater) and steam boiler: Volumes of circulated brines, electric currents in heaters and steam volume were manipulated by PID control action (velocity algorithm). Furthermore, capacities of cooling and dehumidifying coils were optimalized for high accuracy by the feed-forward control of brine temperatures, where the optimum temperatures of respective brines were set on the basis of the desired values of air temperature and humidity. This system made it possible to control relative humidity from 10 or 20 to 85% within ±3% RH in an air temperature control region of 0 to 45±0.3℃ (the lowest humidity was 10% RH at air temperatures higher than 10℃, but was 20% RH at 0℃): This control region covered saturation deficits of 0.73 to 58.77g m^<-3>.
- 九州大学の論文
著者
-
Matsui Tsuyoshi
Department Of Nuclear Engineering Graduate School Of Engineering Nagoya University
-
Matsui Tsuyoshi
Biotron Institute Kyushu University
-
Eguchi H
Res.center For Nuclear Sci. And Tech. Univ Of Tokyo
-
Eguchi Hiromi
Biotron Institute Kyushu University
-
Kitano Masaharu
Biotron Institute Kyushu University
関連論文
- EFFECT OF SOIL WATER POTENTIAL ON TRANSPIRATION RATE IN CUCUMBER PLANTS
- On the Activation Process of Pepsinogen
- EVALUATION OF STOMATAL ACTIVITY BY MEASURING LEAF TEMPERATURE DYNAMICS
- MEASUREMENT OF DIURNAL CHANGE IN TUBER GROWTH OF SWEET POTATO PLANTS
- EFFECT OF AIR HUMIDITY AROUND TUBEROUS ROOT ON SINK STRENGTH IN SWEET POTATO PLANTS GROWN IN A SOLUTION-AIR CULTURE SYSTEM
- EFFECT OF ROOT TEMPERATURE ON SINK STRENGTH OF TUBEROUS ROOT IN SWEET POTATO PLANTS (IPOMOEA BATATAS LAM.)
- ON-LINE SYSTEM FOR VOLUME MEASUREMENT IN SWEET POTATO TUBER
- NEW SYSTEM OF HYDROPONICS FOR GROWTH ANALYSIS OF SWEET POTATO TUBER
- RADIATION SYSTEM FOR SIMULATION OF UNDERWATER LIGHT
- ARTEFECEAL CONTROL OF SEA URCHIN SPAWNING IN AII SEASON(Developmental Biology)(Proceeding of the Seventy-Third Annual Meeting of the Zoological Society of Japan)
- GROWTH OF CUCUMBER PLANTS (CUCUMIS SATIVUS L.) UNDER DIURNAL CONTROL OF AIR TEMPERATURE
- GROWTH OF SWEETPOTATO TUBER AS AFFECTED BY THE AMBIENT HUMIDITY
- ANALYSIS OF GROWTH, WATER BALANCE AND RESPIRATION OF TOMATO FRUITS UNDER WATER DEFICIT BY USING A MULTIPLE CHAMBER SYSTEM
- TEMPERATURE DEPENDENCE OF POSTPHLOEM TRANSPORT REGULATED BY RESPIRATION IN TOMATO FRUITS
- RESPIRATION, SAP FLUX, WATER BALANCE AND EXPANSIVE GROWTH IN TOMATO FRUIT
- ON-LINE MEASUREMENTS OF CO_2 AND H_2O GAS FLUXES, SAP FLUX AND EXPANSIVE GROWTH IN AN INTACT TOMATO FRUIT
- GROWTH OF LETTUCE PLANTS (LACTUCA SATIVA L.) UNDER CONTROL OF DISSOLVED O_2 CONCENTRATION IN HYDROPONICS
- EVALUATION OF PHOTOASSIMILATE FLUX THROUGH A TOMATO PEDICEL
- GROWTH OF LETTUCE PLANTS (LACTUCA SATIVA L.) UNDER VARIABLE-VALUE CONTROL OF AIR TEMPERATURE BY USING NATURAL LIGHT INTENSITY AS FEEDBACK SIGNAL
- Mathematical Model of Flower Stalk Development in Chinese Cabbage in Response to Low Temperature
- INTERACTIVE DYNAMICS OF FRUIT AND STEM GROWTH IN TOMATO PLANTS AS AFFECTED BY ROOT WATER CONDITION II. RELATION WITH SUCROSE TRANSLOCATION
- INTERACTIVE DYNAMICS OF FRUIT AND STEM GROWTH IN TOMATO PLANTS AS AFFECTED BY ROOT WATER CONDITION I. EXPANSION AND CONTRACTION OF FRUIT AND STEM
- GROWTH OF CUCUMBER PLANTS (CUCUMIS SATIVUS L.) UNDER VARIABLE-VALUE CONTROL OF AIR TEMPERATURE BY USING NATURAL LIGHT INTENSITY AS FEEDBACK SIGNAL
- CONTROL OF EVAPORATIVE DEMAND ON TRANSPIRING PLANTS III. TRANSPIRATION AND GROWTH OF CUCUMBER UNDER CONTROLLED EVAPORATIVE DEMAND
- CONTROL OF EVAPORATIVE DEMAND ON TRANSPIRING PLANTS II. CONTROL ALGORITHM AND PERFORMANCE
- SENSING OF AIR TEMPERATURE AND HUMIDITY IN CONTROLLED ENVIRONMENT FOR PLANT RESEARCH
- TRANSPIRATION RESPONDING TO LIGHT CONDITIONS IN CONTROLLED ENVIRONMENTS-EFFECT OF INFRARED RADIATION
- DIGITAL IMAGE PROCESSING OF PLANTS IN TWO WAVE BANDS OF RED AND INFRARED FOR EVALUATION OF GROWTH
- DIGITAL IMAGE PROCESSING IN POLARIZED LIGHT FOR EVALUATION OF FOLIAR INJURY (Environmental and Experimental Botany, Vol. 22, No. 3)
- Phylogenetic study on Cucurbita species by means of esterase zymogram
- Relationships between genome constitution and esterase composition in Brassica
- ANALYSIS OF SOIL TEMPERATURE EFFECT ON TRANSPIRATION BY LEAF HEAT BALANCE IN CUCUMBER, CUCURBIT AND THEIR GRAFTED PLANTS
- ACCURATE AND ENERGY CONSERVATIVE GROWTH CHAMBER WITH TIME DIVISION PID CONTROL ACTION
- DIRECT DIGITAL CONTROL OF AIR HUMIDITY FOR PLANT RESEARCH
- ANALYSIS OF STATIC AND DYNAMIC CHARACTERISTICS OF HUMIDITY SENSORS
- ANALYSIS OF HEAT BALANCE OF LEAF WITH REFERENCE TO STOMATAL RESPONSES TO ENVIRONMENTAL FACTORS
- Observation of Surface Blistering by Grazing Incidence Electron Microscopy
- METHODOLOGICAL ESTABLISHMENT FOR INDIVIDUAL EVALUATIONS OF HYDRAULIC CONDUCTANCES OF NODE, INTERNODE AND LEAF INSERTION IN A NODAL COMPLEX
- AN IMPROVED CUVETTE FOR INDIVIDUAL EVALUATIONS OF GAS EXCHANGE PARAMETERS ON ADAXIAL AND ABAXIAL LEAF SURFACES UNDER DIFFERENT AIR CURRENTS
- A NEW METHOD FOR MEASUREMENT OF ROOT LENGTH BY IMAGE PROCESSING
- A MODEL OF LEAF GROWTH RESPONDING TO AIR TEMPERATURES
- TWO DIMENSIONAL ANALYSIS OF RELATIVE GROWTH IN LETTUCE LEAF
- PHYSICAL EVALUATION OF EFFECTIVE EVAPORATIVE DEMAND WITH REFERENCE TO PLANT WATER RELATIONS
- EVALUATION OF LEAF BOUNDARY LAYER CONDUCTANCE OF A WHOLE PLANT BY APPLICATION OF ABSCISIC ACID INHIBITING TRANSPIRATION
- DYNAMIC CHARACTERISTICS OF COOLING AND DEHUMIDIFICATION IN PHYTOTRON SYSTEM
- APPLICATION OF HEAT PUMP SYSTEM TO THE AIR TEMPERATURE CONTROL IN GROWTH CHAMBER
- DYNAMICS OF WHOLE-PLANT WATER BALANCE AND LEAF GROWTH IN RESPONSE TO EVAPORATIVE DEMAND. II. EFFECT OF CHANGE IN WIND VELOCITY
- QUANTITATIVE EVALUATION OF ROOT SYSTEM BY IMAGE ANALYSIS AS AFFECTED BY O_2 CONCENTRATION IN NUTRIENT SOLUTION OF WATER CULTURE
- ANALYSIS OF AIR CURRENTS IN PHYTOTRONS BY THE FINITE ELEMENT METHOD
- AIR HUMIDITY WITHIN BOUNDARY LAYER OF A TRANSPIRING LEAF : II. PROFILE OF WATER VAPOR DENSITY WITHIN THE BOUNDARY LAYER
- ANALYSIS OF CARBON TRANSLOCATION TO ROOT RESPIRATION IN CUCUMBER PLANTS (Cucumis sativus L.) BY ^CO_2 TRACING
- HYDROACTIVE AND HYDROPASSIVE MOVEMENTS OF STOMATA RESPONDING TO VISIBLE AND INFRARED RADIATIONS
- Emeritus Professor HIROMI EGUCHI (1935-1999)
- EFFECT OF ROOT TEMPERATURE ON GAS EXCHANGE AND WATER UPTAKE IN INTACT ROOTS OF CUCUMBER PLANTS (CUCUMIS SATIVUS L.) IN HYDROPONICS
- DEPENDENCE OF CALCIUM UPTAKE ON WATER ABSORPTION AND RESPIRATION IN ROOTS OF TOMATO PLANTS (LYCOPERSICON ESCULENTUM MILL.)