55 lines
2.2 KiB
JavaScript
55 lines
2.2 KiB
JavaScript
const coolprop = require('../src/index.js');
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describe('R744 (CO2) Real Values', () => {
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it('should calculate superheat correctly at -40°C saturation', async () => {
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const result = await coolprop.calculateSuperheat({
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temperature: -35, // 5K above saturation temp of -40°C
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pressure: 9.03, // saturation pressure at -40°C (from chart)
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refrigerant: 'R744',
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tempUnit: 'C',
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pressureUnit: 'bar'
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});
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expect(result.type).toBe('success');
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expect(Math.abs(result.superheat - 5)).toBeLessThan(0.1); // Should be ~5K superheat
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});
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it('should calculate subcooling correctly at 0°C saturation', async () => {
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const result = await coolprop.calculateSubcooling({
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temperature: -5, // 5K below saturation temp of 0°C
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pressure: 33.84, // saturation pressure at 0°C (from chart)
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refrigerant: 'R744',
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tempUnit: 'C',
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pressureUnit: 'bar'
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});
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expect(result.type).toBe('success');
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expect(Math.abs(result.subcooling - 5)).toBeLessThan(0.1); // Should be ~5K subcooling
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});
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it('should calculate zero superheat at saturation point', async () => {
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const result = await coolprop.calculateSuperheat({
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temperature: -20, // Exact saturation temperature
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pressure: 18.68, // Matching saturation pressure from chart
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refrigerant: 'R744',
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tempUnit: 'C',
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pressureUnit: 'bar'
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});
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expect(result.type).toBe('success');
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expect(Math.abs(result.superheat)).toBeLessThan(0.1); // Should be ~0K superheat
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});
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it('should calculate zero subcooling at saturation point', async () => {
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const result = await coolprop.calculateSubcooling({
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temperature: 10, // Exact saturation temperature
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pressure: 44.01, // Matching saturation pressure from chart
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refrigerant: 'R744',
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tempUnit: 'C',
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pressureUnit: 'bar'
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});
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expect(result.type).toBe('success');
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expect(Math.abs(result.subcooling)).toBeLessThan(0.1); // Should be ~0K subcooling
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});
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}); |