93 lines
2.5 KiB
Matlab
93 lines
2.5 KiB
Matlab
clear all
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close all
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clc
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%%%%%%%%%%%%%%%%%%%%%%%
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%% Load the experimental data
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Exp1 = load("../Data/Luca_experimental_data/Exp1.mat");
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py_Exp1 = load("../Data/Exp1_WDB.mat");
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tin = py_Exp1.Exp1_WDB(:,1);
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% The power trick: when the setpoint is larger than the actual temperature
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% the HVAC system is heating the room, otherwise it is cooling the room
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Setpoint = Exp1.Exp1.Setpoint.values;
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InsideTemp = mean([Exp1.Exp1.InsideTemp.values, Exp1.Exp1.LakeTemp.values], 2);
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OutsideTemp = Exp1.Exp1.OutsideTemp.values;
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HVAC_COP = 4.5;
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Heating_coeff = sign(Setpoint - InsideTemp);
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Heating_coeff(Heating_coeff == -1) = -1 * HVAC_COP;
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%% Set the model parameters
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% Large side windows
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window_size = [2 25];
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window_roof_size = [5 5];
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surface_part = 0.1;
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U = 1.8; % heat transfer coefficient [W/m2K]
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g = 0.7; % total solar energy transmittance
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v_g = 0.65; % transmittance in visible range of the sunlight
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% Roof
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wall_size = [25 25];
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roof_position = [0 0 0];
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% The roof is supposed to be made of [5cm wood, 10cm insulation, 5cm wood]
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node_thickness = [0.05 0.10 0.05]; % Data from 03.03 email with Manuel
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% Data from https://simulationresearch.lbl.gov/modelica/releases/latest/help
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% /Buildings_HeatTransfer_Data_Solids.html#Buildings.HeatTransfer.Data.Solids.Plywood
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node_conductivity = [0.12 0.03 0.12];
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node_capacity = [1210 1200 1210];
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node_density = [540 40 540];
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% Floor
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ceiling_size = [25 25];
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% The floor is supposed to be made of []
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layer_thickness = [0.05 0.10 0.20];
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layer_conductivity = [0.12 0.03 1.4];
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layer_capacity = [1210 1200 840];
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layer_density = [540 40 2240];
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%% Set the run parameters
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air_exchange_rate = tin;
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air_exchange_rate(:,2) = 2.0;
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t0 = 24;
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power = [tin Heating_coeff .* (Exp1.Exp1.Power.values - 1.67 * 1000)];
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Te = 60*60*24*365;
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%% Run the simulation
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% Note: The simlulink model loads the data separately, includes the
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% calculated solar position and radiations from pvlib
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simout = sim("polydome_model_1");
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%% Compare the simulation results with the measured values
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SimulatedTemp = simout.SimulatedTemp.Data;
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figure; hold on; grid minor;
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plot(tin, InsideTemp);
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plot(tin, OutsideTemp);
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plot(simout.tout, SimulatedTemp, 'LineWidth', 2);
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plot(tin, Setpoint);
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legend('InsideTemp', 'OutsideTemp', 'SimulatedTemp', 'Setpoint');
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hold off;
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% calculation notes for furniture wall parameters
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% surface:
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% 1/4 * 1.8 [m2/m2 of floor space] * 625 m2 surface = 140 m2
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% 140 m2 = [7 20] m [height width]
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% mass:
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% 1/4 * 40 [kg/m2 of floor space] * 625 m2 surface = 6250 kg
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% volume:
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% 6250[kg]/600[kg/m3] = 10.41 [m3]
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% thickness:
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%10.41[m3]/140[m2] = 0.075m = 7.5cm
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