app.py

import streamlit as st
import pandas as pd
import numpy as np
from calculation import SteamPipe

# Load pre-arranged data
insulation_data = pd.read_csv("insulation_data.csv")
cladding_data = pd.read_csv("cladding_data.csv")

# Streamlit UI Design
st.set_page_config(page_title="Steam Pipe Calculator", layout="wide")
st.title("🔥 Steam Pipe Heat Loss & Insulation Calculator")

# Sidebar Inputs
st.sidebar.header("Input Parameters")
steam_flow = st.sidebar.number_input("🚀 Steam Flow (Kg/hr)", min_value=1, value=1000)
inlet_pressure = st.sidebar.number_input("🔥 Inlet Steam Pressure (Kg/cm²g)", min_value=1.0, value=10.0)
superheat = st.sidebar.number_input("🌡️ Degree of Superheat (°C)", min_value=0.0, value=50.0)
steam_temp = st.sidebar.number_input("🌡️ Steam Temperature (°C)", min_value=100.0, value=200.0)
line_size = st.sidebar.selectbox("📏 Line Size (Inch)", ["1", "2", "3", "4", "6", "8", "10"]) 
ambient_temp = st.sidebar.number_input("🌤️ Ambient Temperature (°C)", min_value=-50.0, value=25.0)
ambient_velocity = st.sidebar.number_input("💨 Ambient Air Velocity (m/s)", min_value=0.0, value=1.0)
insulation_material = st.sidebar.selectbox("🛡️ Insulation Material", insulation_data["Material"].unique())
cladding_material = st.sidebar.selectbox("🔩 Cladding Material", cladding_data["Material"].unique())

# Perform Calculations
pipe = SteamPipe(steam_flow, inlet_pressure, superheat, steam_temp, line_size, ambient_temp, ambient_velocity, insulation_material, cladding_material)

outlet_temp, required_thickness, heat_loss = pipe.calculate()

# Display Results
st.subheader("Results")
st.metric(label="Outlet Steam Temperature (°C)", value=f"{outlet_temp:.2f}")
st.metric(label="Required Insulation Thickness (mm)", value=f"{required_thickness:.2f}")
st.metric(label="Heat Loss per Unit Length (W/m)", value=f"{heat_loss:.2f}")

# Run Streamlit App
if __name__ == "__main__":
    st.write("🔍 Adjust inputs in the sidebar and view results dynamically!")